McGill's main campus is situated in downtown Montreal at the foot of Mount Royal. Most of its buildings are in a park-like campus (also known as the Lower Campus) north of Sherbrooke Street and south of Pine Avenue between Peel and Aylmer streets. The campus also extends west of Peel Street (also known as Upper Campus) for several blocks, starting north of Doctor Penfield; the campus also extends east of University Street, starting north of Pine Avenue, an area that includes McGill's Percival Molson Memorial Stadium and the Montreal Neurological Institute and Hospital. The community immediately east of University Street and south of Pine Avenue is known as Milton-Park, where a large number of students reside. The campus is near the Peel and McGill Metro stations. A major downtown boulevard, McGill College Avenue, leads up to the Roddick Gates, the university's formal main entrance. Many of the major university buildings were constructed using local grey limestone, which serves as a unifying element.