42. Metropolitan Museum of Art, New York
If you only visit one American museum in your life, make it this one.
Attracting more than 5 million visitors a year, the Met houses nearly 2 million works of art spanning 5,000 years, spread over the most amazing settings, covering 14 acres.
Having undergone massive renovation in the past decade, the museum is incredible both in the treasures it holds and the building itself.
Not only do you get to see some amazing works of art, but if you head to the roof, you also get some magnificent views of New York.