Irregular opening hours. Daily in the summer. Can only be visited as part of a guided tour (duration 25 minutes), admission 8 sfr. News under: kristallhoehle.ch/web/#1 According to Wikipedia, two …
Imposing castle ruins near the so-called cave castle (originally a "wooden house" with 4 floors in a cave up to 20 m deep, closed from the outside with a so-called …
The Felsenkeller is located near the Hoch-Altstätten Castle, a cave with a spherical diameter of about 3 m that was created by human hands and was probably used for storage, …