Halki or Tragea (16 Km from Naxos Town) once administrative centre, is a beautiful village with long history. It is situated in the middle of an olive grove with towers built by Byzantines and Venetians.

Sightseeing - The Byzantine church of Panagia Protothroni which was built in the 9th century with fine frescoes from Early Christian, middle Byzantine and late Byzantine periods. The 3 floors tower of Barotsi - Frangopoulou - Gratsia that was built the 17th century by the Venetian family Barotsi. The the church of Agios Georgios Diassoritis since 9th century with excellent frescoes. Near to Halki in Monitsia settlement, the church of Panagia Rahidiotissa with beautiful frescoes and wooden screen. In Metohi the church Saint John, Theologos since 13th century. Near the town of Kaloxylos the church of Daminiotissa Virgin of exceptional architecture and two layers of frescoes.