This once rural mansion now sits in the heart of the city.

A landscape of massive spherical boulders are the main attraction in this Kansas State Park.

Site of the 1879 Cheyenne Outbreak and the site where famed Sioux chief Crazy Horse met his fate.

One of the Eight Wonders of Kansas and the first official National Natural Monument these stark formations look like nature's Stonehenge.

Self-built house and sculpture park where the creator can still be seen in a glass coffin.

These otherworldly limestone formations jut out from the Kansas prairie.

This erect, phallic geological spire wasn't always named so domestically.

The deserted railroad town had a last gasp as a ghost town attraction before being abandoned for good.

A striking sculpture built to honor the women of the Lakota and Dakota Nations.

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

Giant six-pack could provide one person a six-pack a day for 3,351 years.

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

While there are no actual snakes in the history of this crooked road, there may be a number of dead horses.

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

For just a few bucks, this Iowa funicular will let you feel like an 1800s fat cat.

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

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

A warning to the weak-kneed: This narrow bridge does its swinging eight stories high.

Remnants of a quarry company town still stand on the banks of the Wapsipinicon River.

A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

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

In the St. Francois Mountains in the Ozarks at 1,772 feet above sea level, Taum Sauk Mountain is the highest (and possibly oldest) peak in Missouri.

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.