In ancient Greece, the acropolis was the highest part of a settlement (from "akros", high and "polis", city) and was the seat of power.
Made up of a hill of calcareous rock 156 metres high, 150 wide and about 300 long, it has been inhabited without interruption since 3000 B.C. and became one of the major cities during the Mycenaean Period, of which the remains of the Cyclopean walls and a large palace, the seat of powerful princes, are evidence.
The Acropolis later became a sacred site: temples dedicated to the protecting Gods of the city (Athena, Zeus, Poseidon), altars, sacred areas and other buildings dedicated to mythical heroes.
Very little is known about the history of the Acropolis from the Mycenaean period to the VI century B.C., but its slow transformation from inhabited stronghold to sanctuary was probably finally ended by the rise to the power of the tyrant Pisistratus, in the second half of the VI century B.C..