Hermoupolis is the capital and main city of the island of Syros and the Cyclades prefecture.

Was founded within the blaze of the Greek Revolution in 1821, as an extension to the existing Ano Syros township, by refugees who fled from Chios, Psara, Kydonia, Kassos and elsewhere to save their lives from the Turkish massacre.

It soon became the leading commercial and industrial center of Greece, as well as its main port.

Thousands of ships were built in the various Syros shipyards.