Cambridge, founded in 1630, is one of the oldest cities in the United States. As of 2000 census, Cambridge is home to 101,354 residents in its 7.1 square miles. Cambridge is world famous for its universities: Harvard, MIT, Tufts, and Lesley, and the related high-tech, biotech, and consulting industries. It is a compact, walkable city with many vibrant town squares. Public transportation to Boston and surrounding communities is provided by MBTA Bus, and several trains: five stops on the Red Line and one on the Green Line of the "T", as well as regional Commuter Rail. Cambridge is also home to several museums: Busch-Reisinger Museum, Fogg Art Museum, Harvard Museum of Natural History, Peabody Museum of Archaeology and Ethnology, and the MIT Museum, along with numerous small galleries, clubs, and performance venues.