Palaiokastro

Palaiokastro - Credit: Wikimedia Commons

Palaiokastro (, , "old castle") is a castle built in the eastern part of the Aegean island of Ios, 17 km from Chora. Today, the ruins left are parts of the walls and ruins of its internal buildings. Inside the walls there is now the small Church of Panagia Paleokastritsa. Read more on Wikipedia

type: military installation
date from: 1397

Source: en.wikipedia.org