The Getty Villa is like taking a trip to Europe , and all you have to do is drive up the 405. I have seen more valuable and historically significant art in Europe, but going to the Villa is so great because it's like experiencing Roman life for yourself. Standing in the middle of a beautiful peristyle with musicians playing Egyptian instruments, I could totally imagine I was really living in the Roman Empire.
Greek vases rock! Check out my man Theseus killing the Minotaur (the half-man, half-bull) in the middle of the Labyrinth.