The Metropolitan Museaum of Art is beautiful. Going to MoMA is the equivalent of going wallpaper shopping and seeing a Fifth Grade Art exhibit after dropping acid.
NOTHING is as hideous as the excrement they show at the Guggenheim. The building is a-s ugly too and a blight on the East Side.
For me the big three are the Met, The Cloisters (part of the Met, I know!), and the Frick. I would add the Whitney if they would steal Hopper's Nighthawks from Chicago and make their collection of the greatest artist of the 20th century complete.