Sister Margaret Mary hovered among the crowd circulating in Piazza del Colosseo and stole clandestine glances at the Moretti family. They were being introduced to Arco di Costantino, the massive triumphal arch honoring the victories of Constantine the Great. The defeat of Maxentius at the Battle of the Milvian Bridge led to Constantine I becoming the sole Roman emperor from 324 to 337 AD. The monumental structure measures 69 feet tall by 85 feet wide.
