The Basilica of Santa Margherita is a 19th-century neo-Gothic reconstruction of the 13th-century church built in honour of the town's patron saint. The interior is bright and serene, with a high vaulted ceiling and a glass casket at the high altar containing the body of Margherita herself.
The basilica sits just below the Medici fortress on a high terrace. The view down over the medieval streets and the valley beyond is among the best in Cortona. Free admission.