The Guggenheim Museum in New York is a must stop for any hardcore or even casual art lover. The building, on Fifth Avenue, is sort of shaped like a giant toilet bowl, as it is narrower on the bottom and wider on the top. The building itself was designed by Frank Lloyd Wright, so you know a lot of thought and effort went into its design. Inside, a circular ramp right along the outside of the building takes guests all the way up to the top floor. It's truly a remarkable design. The building houses mostly Impressionist and Post-Impressionist works.