In Kastro, the Pantanassa Church that was founded in 1787 and the Museum of Byzantine and Post - Byzantine Sikinos.
In Horio, the Old Olive Press and the Folklore Museum.
In Hora, the Monastery of Zoodohos Piyi and the windmills along the settlement's highest ridge.
At Episkopi, the Church of the Koimissis Theotokou, which was built over the ruins of a 3rd - century - B.C. temple dedicated to Apollo Pythios.