One extremely determined man's homemade universe.

Meet the "Green Monster" of Monico, Wisconsin.

The only Frank Lloyd Wright-designed structure in the architect's hometown.

Eternal resting place of the grave robber and murderer who served as inspiration for many of cinema’s famous madmen.

On the windswept Dakota plains there is a memorial to circus workers who were struck down by lightning.

Minnesota's oldest and deepest mine is now an underground physics laboratory.

A mapping error in the 19th century made loggers think this section of the forest was underwater.

At this Minnesota state park you can easily wade across the source of the mighty Mississippi.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

The world's largest floating loon bobs in the lake to kick off an annual festival.

A four story, football field-sized, nine-grotto creation made of shells, minerals, and rare stones.

Five acres of divinely inspired folk art.