The castle of Chora is undoubtedly the most renowned medieval monument of Naxos. It was built under the lead of Venetian Duke Markos Sanoudos in 1207. The castle has two entrances: Trani Porta (Great Gate) to the north and Paraporti (wicket) to the left. Inside the castle you will find many medieval buildings, such as the boarding school of Ursulines and the School of Commerce founded by Jesuit monks, the Kapela Kazatza, a chapel of the Duke, the Catholic Cathedral and the Tower of Krispi or Glezos, today housing the Byzantine Museum.
Heading to the center of the island, near Chora, you will come across the Venetian castle of Belonia, a local nobleman at the Galanado village.
At the entrance of Apeirathos village, you will find the Zevgoli tower (17th century) built on a rock and in Sangkri village you will have the chance to admire some Venetian towers.