From above or below, on the ramparts or inside the walls, Carcassonne’s double line of fortifications are a marvel.
The insurmountable walls and 52 towers are deservedly the centre of attention and go on for three kilometres around the old upper city.
You can enter the Château Comtal for a tour, and with an audio-guide you should expect to lose two awe-filled and informative hours finding out about how the walls were built in the 15th century and how they were restored in the 1800s by Viollet-le-Duc.
You can do the full walk along the battlements, and between the walls there are even jousting shows for families to watch in summer.