Manhattan is also home to some of the most extensive art collections in the world, both contemporary and classical art, including the Metropolitan Museum of Art, the Museum of Modern Art (MoMA), the Frick Collection, the Whitney Museum of American Art, and the Frank Lloyd Wright-designed Guggenheim Museum. The Upper East Side has many art galleries, and the downtown neighborhood of Chelsea is known for its more than 200 art galleries that are home to modern art from both upcoming and established artists. Many of the world's most lucrative art auctions are held in Manhattan.