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Serifos is part of the island complex of the West Cyclades and it is situated between Sifnos and Kythnos and about 73 nautical miles away from the port of Piraeus. Its shape is almost round and it is about 73 sq. km. in extend, while its coastline is about 80 km long and its coasts, divided in very traditional bays and small gulfs, cover about 10 km. Its latitude is 37°30'16" and its longitude is 25°9'5".
Administratively, Serifos belongs to the Prefecture of Cyclades, the capital of which is Ermoupoli of Syros and it belongs to the Courthouse of Milos. .