Experience the beauty and primeval nature of water up-close at this fascinating site in Switzerland, the water castle of Europe. Having eroded its way to create the Aare Gorge, let the river Aare enrapture you on a visit to the Hasli Valley. With its source in the Grimsel region, the Aare winds its way through the wild mountainous Hasli Valley. Over the course of millennia, it carved its way through the rocks of the flat valley bottom between Meiringen and Innert-kirchen. What exists now is a 1.4 kilometre gorge, up to 200 metres deep. This natural wonder can be explored effortlessly along hiking paths and through tunnels.