The Fort Liberia has a good self guided tour. Took us about an hour with plenty of up and down, ins and outs, and views. The fort overlooks the confluence of two valleys and guards an important route between France and Spain.
We walked from the highest point to the lowest and inside the walls. Amazing construction. Finished with a picnic in the courtyard before we walked down the path and back to the village.
Next – Villefranche Ramparts