The remains of a World War II munitions factory still haunt the fields of this Twin Cities suburb.

When waves crash onto this section of beach, the rocks sing a song.

This massive roadside mascot was the first version of the giant to illustrate his butt.

A toweringly silly piece of modern art has been delighting locals since the 1980s.

These curious caverns have been home to mushrooms, gangsters, and disco.

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

A museum within a museum, devoted to history's most questionable medical devices.

Half of a waterfall goes into the river while the other half seems to disappear.

This pebble beach is so beautiful that taking its rocks is against the law.

Hidden away in the city of Madison, Wisconsin is a nearly forgotten home that Frank Lloyd Wright built for a childhood friend.

Six tiny houses built for working class people form the largest intentional cluster of Wright homes anywhere.

Restaurant in Northern Wisconsin comes with a unique feature: a grassy roof covered in living goats.

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

A giant, Gilded Age mansion that once belonged to the beer baron of Milwaukee.

Vikings and Evangelicals have both had a hand in this replica medieval church.

This cave holds a surprisingly colorful variety of geological oddities.

Hollowed out cedar log tubs set in an ancient towering forest.