Portara can be seen from afar as ships approach the island of Naxos, standing on the northern side of the port. This monument is a gigantic gate, which remains from a temple that was dedicated to Apollo. It was built during the 6th century B.C, when Naxos used to be a commercial and cultural centre.
An impressive monument which was built during the long Venetian rule (1204-1537); it is located on a hill which is the natural acropolis of Hora. A medieval town in the heart of the Aegean still in its original form, inhabited continuously since 1207. The external walls of the peripheral houses shape the wall of the Castle, which has only three entrance gates.