Definitions by Dr. Intaj Malek

acropolis 

the citadel of ancient Greek city built on high grounds

The Greeks guarded their people by buiding great acropolis

acropolis by Dr. Intaj Malek September 4, 2008

citadel 

Citadel means a fortress built to protect the people from possible threat of attack by outsiders or the opponents.

The Greeks built citadels to protect the town from rebellions.

citadel by Dr. Intaj Malek July 6, 2006