- Tour of Rome's underground tombs and temples
- Delve into Roman history as well as its vast underground while an expert guide shares stories of its ancient and religious past
- Visit the Catacombs of Santa Priscilla, burial place for thousands of Christians - including two popes - and home to the earliest known depiction of the Virgin Mary
- Marvel at Capuchin Crypt's incredibly artistic bone displays and explore its individual rooms, such as The Crypt of the Skulls and The Crypt of the Pelvises
- Descend (literally!) through Rome's many layers at the 10th-century Basilica of San Nicola in Carcere
- Learn about the Mythraic, a secret religion whose mysteries remain largely untangled
- Enjoy the personalized attention that comes with attending a small-group tour
