|Image: Predjamski Grad or Castle Lueg, Slovenija. Maybe the most famous cave castle in the World.|
Caves have ever been a place for man, to hide from weather or enemies. So it seems not unusual, that several castles were built into special caves all over the world, using their extraordinary structure for the security or comfort of the inhabitants.
So here are some examples of cave castles. Most of them are in central Europe.