The Servian Wall is an ancient Roman defensive barrier constructed around the city of Rome in the early 4th century BC. The wall was built of volcanic tuff and was up to 10 m (33 ft) in height in places, 3.6 m (12 ft) wide at its base, 11 km (6.8 mi) long, and is believed to have had 16 main gates, of which only one or two have survived, and enclosed a total area of 246 hectares. In the 3rd century AD it was superseded by the construction of the larger Aurelian Walls as the city of Rome grew beyond the boundary of the Servian Wall.
The Porta Esquilina was originally a gateway in the Servian Wall. In the later Roman Empire, it became known as the arch of Gallienus and was the starting point of the via Labicana and via Tiburtina.
The Servian Wall at Via di Sant Anselmo
in the Piazza Manfredo Fanti
The Roman Kingdom, also referred to as the Roman monarchy or the regal period of ancient Rome, was the earliest period of Roman history when the city and its territory were ruled by kings. According to tradition, the Roman Kingdom began with the city's founding c. 753 BC, with settlements around the Palatine Hill along the river Tiber in central Italy, and ended with the overthrow of the kings and the establishment of the Republic c. 509 BC.
The ancient quarters of Rome
Shards of terracotta decorative plaques, 6th century BC (Roman Kingdom and Etruscan period), found in the Roman Forum, now in the Diocletian Baths Museum, Rome
Ancus Marcius depicted on a 57 BC denarius