National Archeological Museum

Wow this place is huge!! Tons of displays, you could spend all day here and not really be able to absorb all this museum has to offer. There are collections of Neolithic art, Cycladic art (I find this stuff fascinating), Mycenaean art, Geometric art, Archaic art, Classical Sculpture, Hellenistic Sculpture (including some famous Greek bronzes), an Egyptian collection, and a huge collection of pottery (think Grecian vases).