a·crop·o·lis 
(ə-krŏpə-lĭs)
(ə-krŏpə-lĭs)n.
1. The fortified height or citadel of an ancient Greek city.
2. A raised area holding a building or cluster of buildings, especially in a pre-Columbian city.
[Greek akropolis : akron, top; see ACROMEGALY + polis, city; see pelə-3 in the Appendix of Indo-European roots.]
acropolisthe Parthenon at the Acropolis
Athens, Greece