Ancient Cyclades

political union in the Aegean islands, Hellenistic period

Vryokastro (Greek: Βρυόκαστρο) is an archaeological site in Kythnos, Greece. It is considered as the ancient capital of the island. It was inhabited from the 12th century BC until the Early Middle Ages. It was called Kythnos in the ancient times and the island was named after it. It is also referred to as Ovriokastro and Rigokastro.

naval battle in 322 BC during the Lamian War, between Athens and Macedonia, ending in Macedonian victory: one of the battles that ended Athenian thalassocracy