If I could choose any world to live in, it'd be a painting done by one of the Hudson River School artists. The Oxbow, Beeches, and Thanatopsis are probably the most beautiful paintings ever created, with the world protrayed so breathtakingly serene and full of sunshine and life it's a wonder that you can't smell the moss while you stand in front of one of their paintings.
But since I can't live there in that perfect world, I'll settle for camping on the cold marble floor in the Metropolitan Museum of Art ;)