Established in 1642 as a Roman Catholic mission, Montreal has remade itself three times: in the 1830s when planners decreed that all buildings be built with limestone; in the 1870s when the city moved up the hill into the Square Mile; and finally in the 1960s, when Place Ville Marie and the Expo 67 World’s Fair dramatically altered the skyline. Sites include: Mount Royal, City Hall, Champ de Mars, Place Jacques Cartier, Sailors Chapel, Bonsecours Market, Place Royale, Place D'Armes, Notre Dame, Chinatown, Victoria Square, Fairmont Le Reine Elizabeth, Windsor Station, Sun Life Building, Windsor Hotel, Dorchester Square, Cathedral of Mary Queen of the World, St. Lawrence Boulevard, St. Jean, Habitat 67, Expo 67, Cartier Monument, Olympic Stadium.