It can be interesting to explore different belief systems. A trip to Santa Maria Maggiore is a good way to deepen your understanding of one of the local religions.
You'll soon find out why this Spello house of prayer is visited by many travelers. If you're searching for other things to see here, Basilica of Santa Chiara, Cathedral of San Rufino, and Eremo delle Carceri are in this area too. They won't take you very long to reach from Santa Maria Maggiore.