At 22 miles long and 12 miles wide, Lake Tahoe is so big it straddles both California and Nevada; it's also the biggest alpine lake on the continent. The water's clarity is remarkable – in some ...

Lake Chatuge, constructed by the TVA in 1942, is uniquely positioned in the middle of the Georgia-North Carolina state line, so you can technically swim in two states in one day. With 132 miles of ...