Explore the citadel on a guided or self-guided walking tour, which typically cover highlights such as the Saint-Nazaire Basilica, the 20th-century Theatre de la Cité, the Museum of Medieval Torture Instruments, and the 13th-century Narbonnaise Gate. You can also go inside Château Comtal; admission tickets include access to the ramparts, which afford panoramic city views.
Tours of the Cité of Carcassonne run from nearby Toulouse; half-day options focus solely on the citadel, while full-day tours typically visit other regional attractions, such as the Chateaux de Lastours or the Canal du Midi, another UNESCO World Heritage Site.