The Jungfrau-Aletsch UNESCO World Heritage Site is located in the Swiss Alps and was designated a UNESCO World Heritage Site in 2001. It encompasses the Jungfrau, Mönch, and Eiger mountains, along with the Aletsch Glacier, which is the largest glacier in the Alps. This area is known for its stunning landscapes, diverse ecosystems, and unique geological features. The site covers approximately 82,400 hectares and is home to various flora and fauna, some of which are rare or endangered. It serves as an important area for scientific research and conservation, highlighting the significance of preserving natural heritage in the face of climate change.