• The Olympeion Archaeological Site

A site of ancient ruins between the Akropolis and the River Ilissos a short walk from the Akropolis-Museum. The major structures in the site are the 6th century BC Temple of Olympian Zeus and the well preserved 2nd century marble Arch of Hadrian.
More in the site are Roman baths, classical era houses, a 5th century basilica, and more.