Boston is one of the oldest cities in the United States, with colonial streets, universities, and a harbor that shaped American history. The Freedom Trail links historic sites including Boston Common, the Old State House, Paul Revere House, and the USS Constitution, Boston Common is the oldest public park in the country, and Fenway Park has hosted Red Sox baseball since 1912. The Museum of Fine Arts and the Isabella Stewart Gardner Museum anchor the Fenway museum district, and Harvard University and the Massachusetts Institute of Technology sit across the Charles River in Cambridge.