"The term acropolis means upper city and many of the city states of ancient Greece are built around an acropolis where the inhabitants can go as a place of refuge in times of invasion. It's for this reason that the most sacred buildings are usually on the acropolis. It's the safest most secure place in town." Athens Guide

The Acropolis in Athens is perhaps the most famous. In Athens, as in other Greek city-states, the ancient Athenians built temples and moments on the Acropolis dedicated to Athena and other ancient Greek gods. The Parthenon was built by Pericles in the 5th century BCE. 

The Acropolis (British Museum)

The Parthenon (with pictures)  

The Parthenon 

3D Parthenon (click on footprint,
then use your arrow keys to move around) 

The Parthenon puzzle (free online game)

Greek Columns

The Elgin Marbles 

Free Ancient Greek Presentations in PowerPoint format