The so-called “Devil’s Castle” near the village of Cabrerets in south-western France. There are quite a few “Devil’s Castles” throughout France, so named for various reasons. This one apparently owed its name to the particularly devilish nature of a group of bandits and highwaymen (some say they were from England) that used it a base for a few years.
Hugging the cliff the way it does, it is virtually impregnable, but the space within is scarce, there is no fresh water except when it rains, and other amenities are minimal, not to say non-existent.
It is still nowadays a great sight to behold.