It is bordered by the city of Westmount (along Atwater Avenue) to the west and the boroughs of Le Sud-Ouest (along the Ville-Marie Autoroute, Guy and Notre-Dame streets, and the Bonaventure Autoroute) to the southwest, Mercier-Hochelaga-Maisonneuve (along the CP rail lines) to the east, Le Plateau-Mont-Royal (along Sherbrooke, University streets, and Pine and Park avenues) to the northeast, and Outremont and Côte-des-Neiges—Notre-Dame-de-Grâce (along the border of Mount Royal Park) to the north. It is bounded on the south by the Saint Lawrence River.