The Basilica of San Lorenzo is one of the oldest buildings still standing in Milan. When built, the basilica was the largest construction project that the Western world has ever seen. When construction was complete, it was the largest circular church in the world, and it was the inspiration for Hagia Sophia.
Today, the Basilica of San Lorenzo is still an operational church, and some of the original features still remain, though much of it has been rebuilt over the years.
