Seegrotte Hinterbühl

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

Located just an hour's drive from Sopron, this underground lake cave is one of Austria's most unique underground attractions and also the largest underground lake cave in Europe.

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