Seegrotte Hinterbrühl - Europas größter unterirdischer See

The Hinterbrühl lake grotto, Europe's largest underground lake, is one of Austria's most fascinating sights. This former gypsum mine, located just outside Vienna, has been taken over by a new team of operators and has been extensively renovated and expanded. For more than 80 years, it has enjoyed great popularity with visitors of all ages and has already attracted more than 20 million visitors. The unique underground world of the Seegrotte offers a piece of extraordinary mining history. Visitors can be enchanted by a mysterious labyrinth of tunnels and underground passages. One highlight is certainly the unforgettable boat trip on Europe's largest underground lake. The Hinterbrühl lake grotto offers mystical experiences that are not to be missed.