Lake Minnetonka is renowned for its natural beauty as well as the prominent people it has attracted to its shores as a historic site of grand hotels, steamboats, and wealthy visitors from around the world, and as the home of the legendary Excelsior Amusement Park. But did you know that early European settlers to the region faced conditions so dire that they named an outlet of the lake "Purgatory Creek"? Or that a ginseng boom brought slaves to...