The Temple of Olympian Zeus was the largest of all the known temples in Athens, around twice the size of the Parthenon. The Parthenon still stands fairly close to its original size, whereas the Temple of Olympian Zeus is now just a cluster of pillars. Don't get me wrong, those pillars are impressive, and they give you a great idea of just how colossus this temple once was. The site itself has two great vantage points, one that is free, and another that costs. Most people's first sight of the temple comes when they visit Hadrian's Arch on Vasilissis Amalias. Right behind a fence near the arch, you get a great view of the temple. This view will cost you nothing, and it affords the only view of this temple at night, and it looks great at night. To many this view is enough to say that they've seen it. Your Acropolis ticket gives access to the Temple of Olympian Zeus. The temple site itself is a mixed bag of crumbling foundations. Getting close to these colossal pillars, though, gives an idea of how truly big they are. One, which fell down in 1852, can be examined more closely.