This quirky roadside attraction provides insight into Minnesota's logging history.

This posh mansion began as a family's estate and ended as the site of a murder ripped from the pages of a pulp novel.

The lowest point in South Dakota and the source of the Minnesota River.

The watery grave of an impractical idea.

This rare vessel mixed luxury with labor before being converted to a museum and sometimes haunted maze.

The famed architect designed this Minnesota gas station of the future with a lookout tower.

This large midwestern cavern features impressive rock formations and an underground waterfall.

Dakota legend claims this locally iconic pinnacle was once part of a sacred burial site that was cleaved in two.

A stone face watches over the river.

Inside this museum resides a boot fit for a giant.

17,400 lbs., 12 feet in diameter, and 29 years in the making.