The most important monuments of the site are:

- The Castle. a) The fortification. The Frankish castle with the battlements and towers was founded by William II de Villeharduin and was later reinforced by the Greeks and the Turks. b) The walls. The two strongly fortified circuit walls were strengthened by tall, rectangular towers, dated to the Late Byzantine period.

- The Cathedral of St. Demetrios. It belongs to a mixed architectural type: it is a three-aisled basilica on the ground ...