A remnant of the last Ice Age, this lake is surrounded by fascinating rock formations.

A museum dedicated to the exploring past, present, and future innovations.

This vintage "streetcar boat" lay at the bottom of Lake Minnetonka until the 1980s.

The Real LegoLand.

A wonderland of caves in eastern Iowa.

When flour explodes, it's not a pretty sight.

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

These former Cold War launch sites have been preserved for tourists to see where the button might have been pushed.

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

The site of an ancient Mississippian settlement that appears to have flourished during the 10th to 13th centuries.

A place of great reverence for Trekkies everywhere, a hero's future birthplace.

An Iowa town celebrates its heritage with the tallest working Dutch windmill in North America.

Journey through the largest remaining peat bogs in the contiguous United States to see the wilderness as it once was.

In rural Iowa, an imported 19th-century windmill overlooks an unlikely enclave of Danish culture.

Architectural elements and building materials for this house were transported from Salisbury, England.

The magazine keeps a perfectly groomed display garden for its photo shoots.

An underground wonderland in Iowa.

The remains of a enormous earthen figure of unknown origins cuts across a rural Wisconsin road.

"World's largest scrap metal sculpture" stands in an outdoor sculpture garden in the middle of Wisconsin.

The remains of a bustling turn-of-the-century park built to showcase the wonders of electricity.

A tribute to the twin ideals of religion and patriotism, built by a Catholic priest from rocks, glass, and innumerable found items.

"...I guess that was your accomplice in the wood chipper?"

This cave holds a surprisingly colorful variety of geological oddities.

One of the last surviving C-97s sits in a field in front of a Wisconsin inn.