Cape Sounion (Modern Greek: Aκρωτήριο Σούνιο Akrotírio Soúnio ]; Άkron Soúnion, latinized Sunium; Venetian: Capo Colonne Cape of Columns) is the promontory at the southernmost tip of the Attic peninsula, south of the town of Lavrio (ancient Thoricus), and southeast of Athens. It is part of Lavreotiki municipality, East Attica, Greece. It is part of Athens metropolitan area.