A small Renaissance church on Via Torino that contains one of the most remarkable visual illusions in Italian architecture. From the nave, the choir appears to extend deep into the building in perfect Renaissance perspective — except that it is painted on a shallow wall only 97 centimetres deep. Bramante's trompe l'oeil choir is one of the finest examples of perspective manipulation in 15th-century art.
The church also contains a beautiful 15th-century terracotta Pietà in the Sacello di San Satiro (a 9th-century chapel incorporated into the larger church). This is a five-minute detour from the Duomo that most visitors completely miss. Do not walk past it.