San Babila is a Roman Catholic church in Milan. It was once considered the third most important in the city after the Duomo and the Basilica di Sant'Ambrogio. It is dedicated to saint Babylas of Antioch. At the beginning of the 5th century, Marolus, the bishop of Milan, brought from Antioch to Milan relics of saints Babylas of Antioch and Romanus of Caesarea. Marolus founded the Basilica Concilia Sanctorum or church of San Romano, which stood until the 19th century a few meters south of the church of San Babila, on the site of a Roman temple dedicated to the Sun. The church of San Babila was built on the same site in about 1095.