There is art from Egypt to Rome to America, dating back from before Visuvius erupted to a couple years ago. Fascinating exhibits of everything from painting to sculpture to pendants.
Make sure to ask a worker there where to find things, because the map is confusing and you'll just waste time trying to follow it. Schedule breaks for yourself, because it is alot to take in, and if you don't have breaks you'll tire yourself out pretty quickly, because there is so much to see. Pick what's most important to you, becuase it's huge, and even if you were in there for a year you might not see it all, so hit what you really want to see first.More