Lake Baikal, the deepest freshwater lake in the world, is located in Russia. It reaches depths of over 1,600 meters and is known for its stunning clarity and biodiversity. Lake Baikal is not only the world's oldest (about 25 million years) but also contains approximately 20% of the world's unfrozen freshwater. The lake is surrounded by stunning landscapes, including mountains and forests, making it a popular destination for tourists and researchers. It is recognized as a UNESCO World Heritage site, emphasizing its ecological and cultural significance.