The main campus of the University of Toronto is situated in the heart of downtown Toronto. The Department of Physics is spread over three campuses, the St. George campus (downtown, in the McLennan Physical Laboratories), the Scarborough campus (30 km east) and the Erindale campus in Mississauga (30 km west). McLennan Physical Laboratories is located at the north-east corner of Russell Street and Huron Street, and prominently features the16 story Burton tower. Pedestrian entrance is via St. George, Huron or Russell streets.