Agios (Saint) Petros Tower, Hellenistic era (4th-3rd century B.C.), is one of the best preserved in Cyclades islands. It has cylindrical shape and its height is 20m.
Andros (Greek: Άνδρος) is the northernmost island of the Greek Cyclades archipelago, approximately 10 km (6 mi) south east of Euboea, and about 3 km (2 mi) north of Tinos.