A few jagged stone walls are all that remain of Montréal's first general hospital. The ruins—which once formed the west wing and the transept of the chapel—have been preserved as a memorial to Canada's first native-born saint, Marguerite d'Youville (1701–71), who took over the hospital in 1747 and ran it until a fire destroyed the building in 1765. St. Marguerite's life was no walk in the park, as you'll find out if you visit the Maison de Mère d'Youville next door to the ruins. Marguerite started looking after the city's down-and-outs after the death of her abusive and disreputable husband. Amused that the widow of a whiskey trader should be helping the town drunks, locals took to calling Marguerite and her Soeurs de la Charité (Sisters of Charity) the Soeurs Grises (Grey Nuns), slang for "tipsy nuns." The Maison has some remarkable reminders of her life, such as the kitchen where she worked, with its enormous fireplace and stone sink. Call ahead for tours of the house.