The world's largest freshwater lake by surface area is Lake Superior, located on the border of Canada and the United States. It is one of the Great Lakes and covers approximately 31,700 square miles (82,100 square kilometers). Lake Superior holds an estimated 10% of the world's surface freshwater and is known for its clear waters and unique ecosystems. The lake is not only a vital water resource but also a popular destination for recreational activities such as boating, fishing, and camping. Its sheer size and ecological significance make it a crucial feature of North America's Great Lakes system.