acropolis

thumb|upright=1.5|Acropolis of Athens in Athens, Greece An acropolis was the settlement of an upper part of an ancient Greek city, especially a citadel, and frequently a hill with precipitous sides, mainly chosen for purposes of defense. The term is typically used to refer to the Acropolis of Athens, yet nearly every Greek city had an acropolis of its own. The term derives from the homonymous Greek word "Ακρόπολις", composed from "akron" (ἄκρον), which means "top", and "polis" (πόλις), which means "city".

Acropolises were used as religious centers and places of worship, forts, and places in which the royal and high-status resided. Acropolises became the nuclei of large cities of classical ancient times, and served as important centers of a community. Some well-known acropolises have become the centers of tourism in the present day, and they are a rich source of archaeological information of ancient Greece, especially, the Acropolis of Athens.