This 4th-century octagonal basilica is the oldest church in Milan. It was substantially rebuilt in the 11th century after a devastating fire and numerous earthquakes, heavily renovated in the 16th century and completely restored in the 1930s. Since it was built on unstable, marshy ground, the entire structure sits on enormous blocks of foundation taken from other Roman sites.
In keeping with superlatives, the dome is Milan’s highest. It was constructed in the 16th century after the previous one collapsed.
Opposite the church is a row of 16 Roman Corinthian columns, Colonne di San Lorenzo, the ruins of a 3rd century A.D. Roman temple. Tweet