The excavations at the site “Vryokastro” on the island of Kythnos (Cyclades) started in 2002 and continue until today. Before the start of the excavations, a systematic survey took place during the years 1990-1995 and 2001. The site is identified with the ancient city of ‘Kythnos’, which was inhabited from the 10th century BC up to the 6th-7th century AD. The excavations have brought to light a sanctuary of the Archaic, Classical and Hellenistic times.

The excavations are carried out by the Department of History, Archaeology and Social Anthropology of the University of Thessaly (IAKA), in cooperation with the 21st Ephorate of Prehistoric and Classical Antiquities. Director of the excavations is Professor Alexander Mazarakis-Ainian.