Cave castle
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A cave castle or grotto castle is a residential or refuge castle that has been built into a natural cave. It falls within the category of hill castles. Unlike other types, such castles can only be ass
Predjama grotto castle near Postojna (Adelsberg), Slovenia
Kropfenstein Castle near Waltensburg/Vuorz, Graubünden, Switzerland
Rappenstein Castle near Untervaz, Graubünden, Switzerland
Balm Castle near Balm, Solothurn, Switzerland
Rock castle
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A rock castle is a type of medieval castle that directly incorporates natural rock outcrops into its defences to such an extent that the rock formations define the structure of the castle. Topographic
Cave castle
…seats and expanded accordingly: for example Stein Castle and Predjama Castle. From an engineering perspective the cave castle is closely related to the rock castle; here too natural or artificially widened rock openings were incorporated into the structure. In Central Europe, many such rock castles have been…
Castello di Mussomeli in Sicily
Castello della Pietra in Vobbia, Liguria
The gateway to Rotenhan Castle, which was entirely hewn out of the sandstone
Spangenberg Castle (Palatinate Forest), with the upper ward on the rock and the lower ward in front of it