The Aletsch UNESCO World Heritage Site is located in the Swiss Alps and is home to the largest glacier in the Alps, the Aletsch Glacier. This site covers an area of approximately 82 square kilometers and is known for its stunning natural beauty, featuring impressive mountain landscapes and diverse ecosystems. Designated as a UNESCO World Heritage Site in 2001, the Aletsch area is significant for its unique glacial formations and biodiversity. It serves as an important research site for studying climate change and its effects on glaciers and surrounding environments, making it a valuable location for both scientists and nature enthusiasts.