What makes this beautiful church, just south of Piazza del Duomo, so exquisite is what it doesn't have -- space. Stymied by not being able to expand the T-shaped apse to classical Renaissance, cross-shaped proportions, the architect Bramante created a marvelous relief behind the high altar. The effect of the trompe l'oeil columns and arches is not entirely convincing, but it is nonetheless magical. Another gem lies to the rear of the left transept: the Cappella della Pietà, so called for the 15th-century terra-cotta Pietà it now houses; the Cappella was built in the 9th century to honor Saint Satiro, the brother of Saint Ambrose. The namesake statue is not the most alluring adornment in this charming little structure; it's the lovely Byzantine frescoes and Romanesque columns that will catch your eye. While this little-visited complex is now eclipsed by other, more famous Milan churches, it was an important pilgrimage site in the 13th and 14th centuries, after news spread through Christendom that an image of the Madonna here shed real blood when stabbed.