Monolithic Church & Catacombs
The largest subterranean church in Europe, carved from solid limestone between the 9th and 12th centuries. The 11th-century sanctuary features soaring stone columns and vaulted ceilings. Beneath the church lie the catacombs, ancient burial chambers and hermitage caves dating to the 8th century.
Access: Guided tour only (obligatory)
Duration: 45 minutes
Tickets: €10 adults, €6 students (book at Tourist Office)