Perhaps the most famous church in this district, it's one of four papal basilicas and Rome's largest Marian church. Built in 430 AD it has had constant additions and alterations to create the highly decorated basilica you see today.Piazza Madonna dei Monti is the center of civic life for the neighborhood, little kids kick balls while old ladies gossip by day; while teens and 20-somethings come out in droves in the evening to hang out in this piazza. The fountain splashes bubbly background music to any happenings here.