The Duchy of Athens was one of the Crusader states set up in Greece after the conquest of the Byzantine Empire during the Fourth Crusade as part of the process known as Frankokratia, encompassing the regions of Attica and Boeotia, and surviving until its conquest by the Ottoman Empire in the 15th century.
13th century Frankish tower at Oinoi
The Acropolis of Athens in the mid-18th century. The discernible fortifications, eventually demolished in the mid-19th century, date back to the de la Roche and Acciaioli periods.
Painting of Madonna comissioned during the reign of Francesco I (1451–1454). From the St. Elias church in Athens, demolished in 1849.
The Frankokratia, also known as Latinokratia and, for the Venetian domains, Venetokratia or Enetokratia, was the period in Greek history after the Fourth Crusade (1204), when a number of primarily French and Italian states were established by the Partitio terrarum imperii Romaniae on the territory of the dissolved Byzantine Empire.
The Frankish tower on the Acropolis of Athens, demolished in 1874
Chlemoutsi castle
Rhodes (city), around 1490
Palace of the Grand Master of the Knights of Rhodes