The collection from Greek Antiquity at the National Archaeological Museum is one of the most complete in the world and was even sealed and buried during WWII to protect it from looting. Spanning prehistory to late antiquity, it is divided into sections - prehistoric, sculptures, vases, metallurgy, and so on. The museum building itself was completed in 1889, neoclassical in design with a large sculpture garden out front, and underwent a major renovation in 2004 just in time for the Olympic games. Of particular note is the Antikythera mechanism, an ancient analogue computer used to predict astronomical positions and eclipses.
National Archaeological Museum of Athens, 28is Oktovriou 44, Athens, 106 82, Greece