Le Castillet was built in the 14th century and used to be the main gate of the city. The city walls around it were demolished in 1904 so it now stands alone in the centre of Perpignan.
Entry is only two Euros for seniors, but you must be able to climb 400 steps to reach the top and enjoy views of Perpignan. You then descend a floor at a time viewing some vintage films of celebrations in the city. Beside the films, each floor holds poster presentations and artifacts from different eras of local history. The posters are written in French and Catalan. Luckily my schoolboy French was just adequate for me to translate sufficient French to understand the history.
The number of visitors in the Castillet at any one time is strictly limited for safety reasons due to the single set of circular stairs. This limit did not trouble us in September. Booking is said to be essential in high season.
We enjoyed our visit which lasted nearly two hours. But if you cannot face 400 steps or read French, a Castillet visit is probably not for you.