The hill on which the ancient city was located extends to an altitude of 327 metres. Ruins of the asty, the Anafian city-state can be seen there; the city was probably established in the 8th century BC by Dorian colonists, and dominated island life until the end of antiquity.
The city walls, as well as extensive ruins of the city’s cemetery, can be seen at Kastelli. Rich findings from the Roman period, during which the island flourished, are scattered throughout the area; one particularly impressive finding is the sarcophagus located next to the historic chapel of Panagia sto Dokari.