Portara, the trademark of the island. It is built on the island of “Palatia”, on the edge of the port. It is the gigantic and magnificent gate of a temple dedicated to Apollo (6th century BC).
The Archaeological Museum within the area of the Castle, where works of art and daily life from the prehistoric period to the early Byzantine years (4th millennium BC– 6th century AD) are exhibited.
- The Castle is perfectly maintained. The Venetian Castle of Naxos Town is an excellent sample of medieval architecture, and it is connected with the long Venetian occupation (1204 - 1537) on the island. It is located on the hill that constitutes the natural acropolis of the town. This construction has the form of a medieval town with the external walls of the surrounding houses forming the walls of the Castle.
- The Castle of Mpazeos, where cultural events and festivals are held.
- The Castle of Zevgolis (7th century) and the museums of Apiranthos: archaeological, geological, natural history and folk museum.
- The old tower of Plaka According to the legend, a fortune-teller – princess lived in it.
- The tower of Chimaros is one of the most important monuments of Naxos. It is circular, built with marble, and it is maintained to a height of about 15 metres.
- The castle of Apaliros It was built during the Byzantine era. On its base, the capital of Byzantine Naxos was located.
- The Upper Castle prevails in central Naxos, with ancient, Byzantine and Venetian monuments.
- Venetian towers of the period of feudalism, built with stone from Naxos. The most important ones are the towers of Belonia, Gratsia, Marcopolitis, Fragopoulos and Barotsis.
Iria–Dionysus Temple. An archaeological area, one of the most beautiful of the island. The 4 temples of the 9th and 8th century BC that are located there are excellent samples of the ancient architecture.
Sagri–Dimitra Temple,of the 6th century BC, built with white marble.
Kouros (Flerio) Lying on the ground, at the position where it was left by ancient technicians, there is an uncompleted Kouros of a supernatural size (10.4 metres),a work of the 6th or 7th century BC, which depicts Dionysus or Apollo.