
In a hole: Castles don't come much more strategically placed than in the mouth of a cave. Predjama Castle in Slovenia is a spectacular fortress embedded in a limestone landscape.

The way in: The modern entrance to the castle is via a drawbridge. The original way was via a ladder to doorways two floors up.

An undignified end: Erasmus von Luegg, a robber baron who was besieged in the castle in the 1480s, met his end when someone fired a cannonball into an outhouse while he was inside.

The warmest room: Built for strategy rather than comfort, most of the castle is cold and damp, but it's main bedroom offers some respite.