Discover the mysteries of ancient Rome with a tour of the Roman Undergrounds. Begin by visiting the haunting Capuchin Crypts, adorned with the skeletal remains of thousands of Capuchin friars. Then, journey to the Christian Catacombs, showcasing Early Christian art through sculptures and frescoes dating back over 2,000 years. Conclude your tour at the Basilica of San Nicola in Carcere, where you can find ancient ruins beneath the altar and hidden temples.