San Maurizio al Monastero Maggiore was originally attached to the most important female convent of the Benedictines in the city, Monastero Maggiore, which is now in use as an archaeological museum. The church today is used every Sunday from October to June to celebrate in the Byzantine Rite, in Greek according to the Italo-Albanian tradition. It is also used as concert hall. The complex was founded in Lombard times, partially re-using ancient Roman edifices. Of these there remain a polygonal tower, a relic of the ancient Maximian walls, and a square one, originally part of the lost Hippodrome and later adopted as the church’s bell tower.