Lake Superior is a vast inland sea at the heart of North America, known for its cold, crystal‑clear waters and wild, rocky shorelines. The largest freshwater lake in the world by surface area, it spans about 31,700 square miles—roughly the size of South Carolina—and holds 10 percent of the planet’s fresh surface water, with depths plunging over 1,300 feet.

Straddling the border between the United States and Canada, it touches Minnesota, Wisconsin, Michigan, and Ontario, and its 2,700-plus miles of shoreline are dotted with forests, cliffs, lighthouses, small harbor towns, and hundreds of islands. Formed by glacial forces roughly 10,000 years ago, Superior’s famously cold, nutrient‑poor waters stay remarkably clean and clear, giving the lake an austere, almost oceanic character that has inspired generations of sailors, storytellers, and communities along its rugged coast.