The day we decided to tour the Acropolis it was a historic holiday of some kind so our entry was completely free. That was pretty awesome. Unfortunately most of the Acropolis was surrounded in scaffolding and undergoing renovations, which made it difficult to get a decent picture.
At night though it looked beautiful.
Athens has plenty of history and architecture to keep you busy for days. The area surrounding the Acropolis is gorgeous and filled with fantastic restaurants and cafes. I couldn't get enough of the vendors selling fresh coconut water and roasted chestnuts.