Seegrotte Hinterbrühl

Hinterbrühl

More than 10 million people have already visited the Seegrotte Hinterbrühl, where jet-powered aircraft were even manufactured during World War II. Why would you miss out?

Located just an hour and a half's drive from Bük, this underground spring cave is one of Austria's most unique underground attractions and Europe's largest underground spring cave.

The passages of the underwater labyrinth can be explored by electric boats.