The largest freshwater lake in the world is Lake Baikal, located in Siberia, Russia. This remarkable lake holds about 20% of the world’s unfrozen freshwater supply, making it not only the largest by volume but also one of the deepest lakes, reaching depths of over 1,600 meters (5,200 feet). Lake Baikal is celebrated for its unique biodiversity, including species found nowhere else on Earth, such as the Baikal seal. Additionally, it is a UNESCO World Heritage Site, highlighting its ecological and cultural significance, as well as the importance of conservation efforts to protect this natural wonder.