1.
Geographic coordinate system
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A geographic coordinate system is a coordinate system used in geography that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are chosen such that one of the numbers represents a vertical position. A common choice of coordinates is latitude, longitude and elevation, to specify a location on a two-dimensional map requires a map projection. The invention of a coordinate system is generally credited to Eratosthenes of Cyrene. Ptolemy credited him with the adoption of longitude and latitude. Ptolemys 2nd-century Geography used the prime meridian but measured latitude from the equator instead. Mathematical cartography resumed in Europe following Maximus Planudes recovery of Ptolemys text a little before 1300, in 1884, the United States hosted the International Meridian Conference, attended by representatives from twenty-five nations. Twenty-two of them agreed to adopt the longitude of the Royal Observatory in Greenwich, the Dominican Republic voted against the motion, while France and Brazil abstained. France adopted Greenwich Mean Time in place of local determinations by the Paris Observatory in 1911, the latitude of a point on Earths surface is the angle between the equatorial plane and the straight line that passes through that point and through the center of the Earth. Lines joining points of the same latitude trace circles on the surface of Earth called parallels, as they are parallel to the equator, the north pole is 90° N, the south pole is 90° S. The 0° parallel of latitude is designated the equator, the plane of all geographic coordinate systems. The equator divides the globe into Northern and Southern Hemispheres, the longitude of a point on Earths surface is the angle east or west of a reference meridian to another meridian that passes through that point. All meridians are halves of great ellipses, which converge at the north and south poles, the prime meridian determines the proper Eastern and Western Hemispheres, although maps often divide these hemispheres further west in order to keep the Old World on a single side. The antipodal meridian of Greenwich is both 180°W and 180°E, the combination of these two components specifies the position of any location on the surface of Earth, without consideration of altitude or depth. The grid formed by lines of latitude and longitude is known as a graticule, the origin/zero point of this system is located in the Gulf of Guinea about 625 km south of Tema, Ghana. To completely specify a location of a feature on, in, or above Earth. Earth is not a sphere, but a shape approximating a biaxial ellipsoid. It is nearly spherical, but has an equatorial bulge making the radius at the equator about 0. 3% larger than the radius measured through the poles, the shorter axis approximately coincides with the axis of rotation
2.
Circus Maximus
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The Circus Maximus is an ancient Roman chariot racing stadium and mass entertainment venue located in Rome, Italy. Situated in the valley between the Aventine and Palatine hills, it was the first and largest stadium in ancient Rome and it measured 621 m in length and 118 m in width and could accommodate over 150,000 spectators. In its fully developed form, it became the model for circuses throughout the Roman Empire, the site is now a public park. The Circus was Romes largest venue for ludi, public games connected to Roman religious festivals, ludi were sponsored by leading Romans or the Roman state for the benefit of the Roman people and gods. Most were held annually or at intervals on the Roman calendar. Others might be given to fulfill a vow, such as the games in celebration of a triumph. The earliest known triumph ludi at the Circus were vowed by Tarquin the Proud to Jupiter in the late Regal era for his victory over Pometia. The greater ludi at the Circus began with a flamboyant parade, much like the triumphal procession, during the Republic, the aediles organized the games. Although their original purpose was religious, the complexity of staging ludi became a way to display the competence, generosity, some Circus events, however, seem to have been relatively small and intimate affairs. In 167 BC, flute players, scenic artists and dancers performed on a temporary stage, others were enlarged at enormous expense to fit the entire space. A venatio held there in 169 BC, one of several in the 2nd century, employed 63 leopards and 40 bears and elephants, as Romes provinces expanded, existing ludi were embellished and new ludi invented by politicians who competed for divine and popular support. By the late Republic, ludi were held on 57 days of the year, on many other days, charioteers and jockeys would need to practice on its track. Otherwise, it would have made a convenient corral for the animals traded in the cattle market. Beneath the outer stands, next to the Circus multiple entrances, were workshops and shops, when no games were being held, the Circus at the time of Catullus was likely a dusty open space with shops and booths. A colourful crowded disreputable area frequented by prostitutes, jugglers, fortune tellers, Romes emperors met the ever-burgeoning popular demand for regular ludi and the need for more specialised venues, as essential obligations of their office and cult. Over the several centuries of its development, the Circus Maximus became Romes paramount specialist venue for chariot races, eventually,135 days of the year were devoted to ludi. With the advent of Christianity as the religion of the Empire. The last known beast-hunt at the Circus Maximus took place in 523, the Circus Maximus was sited on the level ground of the Valley of Murcia, between Romes Aventine and Palatine Hills
3.
Old St. Peter's Basilica
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Old St. Peters Basilica was the building that stood, from the 4th to 16th centuries, on the spot where the new St. Peters Basilica stands today in Vatican City. Construction of the basilica, built over the site of the Circus of Nero. The name old St. Peters Basilica has been used since the construction of the current basilica to distinguish the two buildings, construction began by orders of the Roman Emperor Constantine I between 318 and 322, and took about 30 years to complete. Over the next centuries, the church gradually gained importance. Papal coronations were held at the basilica, and in 800, in 846, Saracens sacked and damaged the basilica. The raiders seem to have known about Romes extraordinary treasures, some holy – and impressive – basilicas, such as St. Peters Basilica, were outside the Aurelian walls, and thus easy targets. They were filled to overflowing with rich liturgical vessels and with jeweled reliquaries housing all of the relics recently amassed, as a result, the raiders pillaged the holy shrine. In response Pope Leo IV built the Leonine wall and rebuilt the parts of St. Peters that had been damaged, in 1099, Urban II convened a council including St Anselm. Among other topics, it repeated the bans on lay investiture, by the 15th century the church was falling into ruin. Discussions on repairing parts of the structure commenced upon the return from Avignon. The whole stretch of wall has been pierced by too many openings, as a result, the continual force of the wind has already displaced the wall more than six feet from the vertical, I have no doubt that eventually some. Slight movement will make it collapse, at first Pope Julius II had every intention of preserving the old building, but his attention soon turned toward tearing it down and building a new structure. Many people of the time were shocked by the proposal, as the building represented papal continuity going back to Peter, the original altar was to be preserved in the new structure that housed it. Constantine went to pains to build the basilica on the site of Saint Peters grave. The Vatican Hill, on the west bank of the Tiber River, was leveled. Notably, since the site was outside the boundaries of the ancient city, the exterior however, unlike earlier pagan temples, was not lavishly decorated. The church was capable of housing from 3,000 to 4,000 worshipers at one time and it consisted of five aisles, a wide central nave and two smaller aisles to each side, which were each divided by 21 marble columns, taken from earlier pagan buildings. It was over 350 feet long, built in the shape of a Latin cross, and had a roof which was timbered on the interior
4.
St. Peter's Basilica
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The Papal Basilica of St. Peter in the Vatican, or simply St. Peters Basilica, is an Italian Renaissance church in Vatican City, the papal enclave within the city of Rome. While it is neither the church of the Catholic Church nor the cathedral of the Diocese of Rome. It has been described as holding a position in the Christian world. Catholic tradition holds that the Basilica is the site of Saint Peter, one of Christs Apostles. Saint Peters tomb is supposedly directly below the altar of the Basilica. For this reason, many Popes have been interred at St. Peters since the Early Christian period, construction of the present basilica, which would replace Old St. Peters Basilica from the 4th century AD, began on 18 April 1506 and was completed on 18 November 1626. St. Peters is famous as a place of pilgrimage and for its liturgical functions. The Pope presides at a number of liturgies throughout the year, drawing audiences of 15,000 to over 80,000 people, either within the Basilica or the adjoining St. Peters Square. St. Peters has many associations, with the Early Christian Church, the Papacy. As a work of architecture, it is regarded as the greatest building of its age, St. Peters is one of the four churches in the world that hold the rank of Major Basilica, all four of which are in Rome. Contrary to popular misconception, it is not a cathedral because it is not the seat of a bishop, St. Peters is a church built in the Renaissance style located in the Vatican City west of the River Tiber and near the Janiculum Hill and Hadrians Mausoleum. Its central dome dominates the skyline of Rome, the basilica is approached via St. Peters Square, a forecourt in two sections, both surrounded by tall colonnades. The first space is oval and the second trapezoid, the basilica is cruciform in shape, with an elongated nave in the Latin cross form but the early designs were for a centrally planned structure and this is still in evidence in the architecture. The central space is dominated both externally and internally by one of the largest domes in the world, the entrance is through a narthex, or entrance hall, which stretches across the building. One of the bronze doors leading from the narthex is the Holy Door. The interior is of vast dimensions when compared with other churches and this in its turn overwhelms us. The nave which leads to the dome is in three bays, with piers supporting a barrel-vault, the highest of any church. The nave is framed by wide aisles which have a number of chapels off them, there are also chapels surrounding the dome
5.
Circus (building)
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The Roman circus was a large open-air venue used for public events in the ancient Roman Empire. The circuses were similar to the ancient Greek hippodromes, although circuses served varying purposes and differed in design, along with theatres and amphitheatres, Circuses were one of the main entertainment sites of the time. Circuses were venues for chariot races, horse races, and performances that commemorated important events of the empire were performed there, for events that involved re-enactments of naval battles, the circus was flooded with water. The Circus of Maxentius epitomises the design, the median strip was called the spina and usually featured ornate columns, statues and commemorative obelisks. The turning points on either end of the spina were usually marked by conical poles, one circus, that at Antinopolis, displays a distinct gap of some 50m between the carceres and the start of the ascending seating where there is apparently no structure. This appears to be an exception, the great majority of circuses fit the description above. These latter circuses are normally small, and should probably be considered stadiums, there are similar buildings, called stadia, which were used for Greek style athletics. These buildings were similar in design but typically smaller than circuses, however, an example of this type is the Stadium of Domitian. Although circuses such as the Circus Maximus may have existed in form from as early as around 500BC. The comparative dimensions of a circus may be measured in 2 basic ways, by the length of the track, other dimensions, such as the external dimensions of the structure may vary considerably depending on the location, the site, and on specific architectural characteristics. The simplest comparative measurement of a circus is its track length and this is the most easily measured dimension, as it only requires small excavations at either end of the centreline. It is very probable that this can be even when the circus is buried under subsequent constructions. Track lengths may vary from the 245m of the circus at Gerasa, the alternative comparative dimension is that of seating capacity. This is much more complex to measure as it requires that the dimensions of the vertical and horizontal extent of the inclined seating be re-established. Seating capacity may vary from around 15,000 people at Gerasa, Circuses do not appear to have been constructed with any special compass orientation. Those that are well identified can be found with their round ends oriented around the compass. Circuses can be found at 3 distinct locations relative to the towns to which belong, outside the city walls at anything up to 1.5 km distant, as at, Gerasa. Simply within the walls, as at, Thessalonica
6.
Ancient Rome
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In its many centuries of existence, the Roman state evolved from a monarchy to a classical republic and then to an increasingly autocratic empire. Through conquest and assimilation, it came to dominate the Mediterranean region and then Western Europe, Asia Minor, North Africa and it is often grouped into classical antiquity together with ancient Greece, and their similar cultures and societies are known as the Greco-Roman world. Ancient Roman civilisation has contributed to modern government, law, politics, engineering, art, literature, architecture, technology, warfare, religion, language and society. Rome professionalised and expanded its military and created a system of government called res publica, the inspiration for modern republics such as the United States and France. By the end of the Republic, Rome had conquered the lands around the Mediterranean and beyond, its domain extended from the Atlantic to Arabia, the Roman Empire emerged with the end of the Republic and the dictatorship of Augustus Caesar. 721 years of Roman-Persian Wars started in 92 BC with their first war against Parthia and it would become the longest conflict in human history, and have major lasting effects and consequences for both empires. Under Trajan, the Empire reached its territorial peak, Republican mores and traditions started to decline during the imperial period, with civil wars becoming a prelude common to the rise of a new emperor. Splinter states, such as the Palmyrene Empire, would divide the Empire during the crisis of the 3rd century. Plagued by internal instability and attacked by various migrating peoples, the part of the empire broke up into independent kingdoms in the 5th century. This splintering is a landmark historians use to divide the ancient period of history from the pre-medieval Dark Ages of Europe. King Numitor was deposed from his throne by his brother, Amulius, while Numitors daughter, Rhea Silvia, because Rhea Silvia was raped and impregnated by Mars, the Roman god of war, the twins were considered half-divine. The new king, Amulius, feared Romulus and Remus would take back the throne, a she-wolf saved and raised them, and when they were old enough, they returned the throne of Alba Longa to Numitor. Romulus became the source of the citys name, in order to attract people to the city, Rome became a sanctuary for the indigent, exiled, and unwanted. This caused a problem for Rome, which had a large workforce but was bereft of women, Romulus traveled to the neighboring towns and tribes and attempted to secure marriage rights, but as Rome was so full of undesirables they all refused. Legend says that the Latins invited the Sabines to a festival and stole their unmarried maidens, leading to the integration of the Latins, after a long time in rough seas, they landed at the banks of the Tiber River. Not long after they landed, the men wanted to take to the sea again, one woman, named Roma, suggested that the women burn the ships out at sea to prevent them from leaving. At first, the men were angry with Roma, but they realized that they were in the ideal place to settle. They named the settlement after the woman who torched their ships, the Roman poet Virgil recounted this legend in his classical epic poem the Aeneid
7.
Vatican City
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Vatican City, officially Vatican City State or the State of Vatican City, is a walled enclave within the city of Rome. With an area of approximately 44 hectares, and a population of 842, however, formally it is not sovereign, with sovereignty being held by the Holy See, the only entity of public international law that has diplomatic relations with almost every country in the world. It is an ecclesiastical or sacerdotal-monarchical state ruled by the Bishop of Rome – the Pope, the highest state functionaries are all Catholic clergy of various national origins. Vatican City is distinct from the Holy See, which dates back to early Christianity and is the episcopal see of 1.2 billion Latin. According to the terms of the treaty, the Holy See has full ownership, exclusive dominion, within Vatican City are religious and cultural sites such as St. Peters Basilica, the Sistine Chapel and the Vatican Museums. They feature some of the worlds most famous paintings and sculptures, the unique economy of Vatican City is supported financially by the sale of postage stamps and tourist mementos, fees for admission to museums, and the sale of publications. The name Vatican City was first used in the Lateran Treaty, signed on 11 February 1929, the name is taken from Vatican Hill, the geographic location of the state. Vatican is derived from the name of an Etruscan settlement, Vatica or Vaticum meaning garden, located in the area the Romans called vaticanus ager. The official Italian name of the city is Città del Vaticano or, more formally, Stato della Città del Vaticano, although the Holy See and the Catholic Church use Ecclesiastical Latin in official documents, the Vatican City officially uses Italian. The Latin name is Status Civitatis Vaticanæ, this is used in documents by not just the Holy See. The name Vatican was already in use in the time of the Roman Republic for an area on the west bank of the Tiber across from the city of Rome. Under the Roman Empire, many villas were constructed there, after Agrippina the Elder drained the area and laid out her gardens in the early 1st century AD. In AD40, her son, Emperor Caligula built in her gardens a circus for charioteers that was completed by Nero, the Circus Gaii et Neronis, usually called, simply. Even before the arrival of Christianity, it is supposed that this originally uninhabited part of Rome had long considered sacred. A shrine dedicated to the Phrygian goddess Cybele and her consort Attis remained active long after the Constantinian Basilica of St. Peter was built nearby, the particularly low quality of Vatican water, even after the reclamation of the area, was commented on by the poet Martial. The Vatican Obelisk was originally taken by Caligula from Heliopolis in Egypt to decorate the spina of his circus and is thus its last visible remnant and this area became the site of martyrdom of many Christians after the Great Fire of Rome in AD64. Ancient tradition holds that it was in this circus that Saint Peter was crucified upside-down, opposite the circus was a cemetery separated by the Via Cornelia. Peters in the first half of the 4th century, the Constantinian basilica was built in 326 over what was believed to be the tomb of Saint Peter, buried in that cemetery
8.
St. Peter's Square
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St. Peters Square is a large plaza located directly in front of St. Peters Basilica in the Vatican City, the papal enclave inside Rome, directly west of the neighbourhood or rione of Borgo. Both the square and the basilica are named after Saint Peter, an apostle of Jesus, at the centre of the square is an ancient Egyptian obelisk, erected at the current site in 1586. Gian Lorenzo Bernini designed the square almost 100 years later, including the massive Tuscan colonnades, four columns deep, a granite fountain constructed by Bernini in 1675 matches another fountain designed by Carlo Maderno in 1613. Bernini had been working on the interior of St, there were many constraints from existing structures. The massed accretions of the Vatican Palace crowded the space to the right of the basilicas façade, the colossal Tuscan colonnades, four columns deep, frame the trapezoidal entrance to the basilica and the massive elliptical area which precedes it. The ovato tondos long axis, parallel to the basilicas façade, the elliptical center of the piazza, which contrasts with the trapezoidal entrance, encloses the visitor with the maternal arms of Mother Church in Berninis expression. On the south side, the colonnades define and formalize the space, on the north side, the colonnade masks an assortment of Vatican structures, the upper stories of the Vatican Palace rise above. The obelisk was erected at Heliopolis, Egypt, by an unknown pharaoh. The Emperor Augustus had the moved to the Julian Forum of Alexandria, where it stood until 37 AD, when Caligula ordered the forum demolished. He had it placed on the spina which ran along the center of the Circus of Nero, the Vatican Obelisk is the only obelisk in Rome that has not toppled since ancient Roman times. During the Middle Ages, the ball on top of the obelisk was believed to contain the ashes of Julius Caesar. Fontana later removed the ancient metal ball, now in a Rome museum, Christopher Hibbert writes that the ball was found to be solid. Though Bernini had no influence in the erection of the obelisk, he did use it as the centerpiece of his magnificent piazza, the paving is varied by radiating lines in travertine, to relieve what might otherwise be a sea of cobblestones. In 1817 circular stones were set to mark the tip of the shadow at noon as the sun entered each of the signs of the zodiac. Below is a view of St. Peters Square from the cupola which was taken in June,2007, St. Peters Square today can be reached from the Ponte SantAngelo along the grand approach of the Via della Conciliazione. The spina which once occupied this grand avenue leading to the square was demolished ceremonially by Benito Mussolini himself on October 23,1936 and was demolished by October 8,1937. St. Peters Basilica was now visible from the Castel SantAngelo. After the spina, almost all the south of the passetto were demolished between 1937 and 1950, obliterating one of the most important medieval and renaissance quarters of the city
9.
Caligula
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Caligula, properly Gaius Julius Caesar Augustus Germanicus was Roman emperor from AD 37–41. Born Gaius Julius Caesar Germanicus, Caligula was a member of the house of rulers known as the Julio-Claudian dynasty. Caligulas biological father was Germanicus, and he was the great-nephew, the young Gaius earned the nickname Caligula from his fathers soldiers while accompanying him during his campaigns in Germania. When Germanicus died at Antioch in AD19, his wife Agrippina the Elder returned with her six children to Rome, the conflict eventually led to the destruction of her family, with Caligula as the sole male survivor. Untouched by the intrigues, Caligula accepted the invitation to join the Emperor in AD31 on the island of Capri. With the death of Tiberius in AD37, Caligula succeeded his grand uncle, there are few surviving sources about the reign of Emperor Caligula, although he is described as a noble and moderate ruler during the first six months of his reign. After this, the focus upon his cruelty, sadism, extravagance. He directed much of his attention to construction projects and luxurious dwellings for himself. During his reign, the empire annexed the Kingdom of Mauretania as a province, in early AD41, Caligula was assassinated as a result of a conspiracy by officers of the Praetorian Guard, senators, and courtiers. Gaius Julius Caesar was born in Antium on 31 August 12 AD, Gaius had two older brothers, Nero and Drusus, as well as three younger sisters, Agrippina the Younger, Julia Drusilla and Julia Livilla. He was also a nephew of Claudius, Germanicus younger brother, Agrippina the Elder was the daughter of Marcus Vipsanius Agrippa and Julia the Elder. She was a granddaughter of Augustus and Scribonia on her mothers side, through Agrippina, Augustus was the maternal great-grandfather of Gaius. As a boy of just two or three, Gaius accompanied his father, Germanicus, on campaigns in the north of Germania, the soldiers were amused that Gaius was dressed in a miniature soldiers outfit, including boots and armour. He was soon given his nickname Caligula, meaning little boot in Latin, Gaius, though, reportedly grew to dislike this nickname. Suetonius claims that Germanicus was poisoned in Syria by an agent of Tiberius, after the death of his father, Caligula lived with his mother until her relations with Tiberius deteriorated. Tiberius would not allow Agrippina to remarry for fear her husband would be a rival, Agrippina and Caligulas brother, Nero, were banished in 29 AD on charges of treason. The adolescent Caligula was then sent to live with his great-grandmother Livia, after her death, he was sent to live with his grandmother Antonia. In 30 AD, his brother, Drusus Caesar, was imprisoned on charges of treason, Suetonius writes that after the banishment of his mother and brothers, Caligula and his sisters were nothing more than prisoners of Tiberius under the close watch of soldiers
10.
Agrippina the Elder
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Vipsania Agrippina, most commonly known as Agrippina Major or Agrippina the Elder, was a distinguished and prominent Roman woman of the first century CE. Agrippina was the wife of the general and statesman Germanicus and a relative to the first Roman Emperors, Agrippina was born as the second daughter and fourth child to Roman statesman and Augustus’ ally Marcus Vipsanius Agrippa and Julia the Elder. Agrippina’s mother Julia was the natural child born to Augustus from his second marriage to noblewoman Scribonia. Her father’s marriage to Julia was his third marriage, from Agrippa’s previous two marriages, Agrippina had at least two half-sisters, Vipsania Agrippina and Vipsania Marcella Agrippina. Vipsania Agrippina was Agrippa’s second child from his first marriage to Pomponia Caecilia Attica She became Tiberiuss first wife and was the mother of his natural son Drusus Julius Caesar. Vipsania Agrippina later married senator and consul Gaius Asinius Gallus Saloninus after Tiberius was forced to divorce her, less well known is Agrippa’s oldest daughter - Vipsania Marcella. She was the first wife Publius Quinctilius Varus, Agrippa likely had more children, some of whom did not survive, from his second marriage to Augustus’ niece and cousin to Julia the Elder, Claudia Marcella Major. No son is attested, but a daughter is possibly the mother of Dec. Haterius Agrippa and her mother’s marriage to Agrippa was her second marriage, as Julia the Elder was widowed from her first marriage, to her paternal cousin Marcus Claudius Marcellus and they had no children. From the marriage of Julia and Agrippa, Agrippina had four full-blood siblings, Agrippina was born in Athens, as in the year of her birth Agrippa was in that city completing official duties on behalf of Augustus. Her mother and her siblings had traveled with Agrippa, later Agrippina’s family returned to Rome. In 12 BCE, Agrippina’s father died, Augustus had forced his first stepson Tiberius to end his happy first marriage to Vipsania Agrippina to marry Julia the Elder. The marriage of Julia and Tiberius was not a happy one, in 2 BC Augustus exiled Agrippina’s mother on the grounds that she had committed adultery, thereby causing a major scandal. Julia was banished for her years and Agrippina never saw her again. Tiberius had left Rome for the Greek island of Rhodes ca.6 BC allegedly to avoid any scandal, in his absence, Augustus arranged the divorce between Tiberius and Julia and sent word of it to Rhodes. With her siblings, Agrippina was raised in Rome by her maternal grandfather, Livia was the first Roman Empress and was Augustus’ second wife. Livia had two sons by her first marriage to praetor Tiberius Nero, the future emperor Tiberius and the general Nero Claudius Drusus. According to Suetonius, as a member of the family, Agrippina was expected to display frugality, chastity and domesticity. Agrippina and Augustus had a close relationship, between 1 BC-5, Agrippina married her second maternal cousin Germanicus
