One of Rome’s most characteristic Baroque squares, Piazza Navona still has the outline of the Roman stadium built here by Emperor Domitian. It was still used for festivals and horse races during the Middle Ages, and was rebuilt in the Baroque style by Borromini, who also designed the magnificent series of palaces and the church of Sant’Agnese, on its west side. Its facade, campanile, and dome highlight the way Baroque architecture weaves convex and concave surfaces, gables, windows, columns, and piers into a unified design. In the crypt of Sant’Agnese are Alessandro Algardi’s 1653 The Miracle of St. Agnes and the remains of a Roman mosaic floor. Sant’Agnese provided a model for Baroque and Rococo churches in Italy and elsewhere.
