'Tower') is a village on the Aegean island of Santorini, Greece, in the Cyclades archipelago with a population of 1,078 according to the 2021 census.

[1] Pyrgos is part of the Municipality of Thira and is situated approximately 7 km away from the island's capital Fira.

It is built amphitheatrically on a hill that offers magnificent views of Santorini in almost all directions.

On top of this hill remain the ruins of a Venetian castle (Kasteli) that was once the island's administrative center.

Pyrgos is a typical example of medieval architecture with narrow, labyrinthine streets, fortified walls and hidden passages.