Less a museum than a bizarre fantasy world created by artists and engineers.

This long unused shot tower on the Mississippi remains a point of pride for a small city in Iowa.

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

The world’s largest truck stop includes a barber shop, chiropractor, and a huge museum with antique trucks.

Find out what it sounds like when doves cry at Prince's recording studio estate turned museum.

Where the famed daredevil attempted to launch himself across a canyon in a custom-built rocket.

These falls, sometimes called the "Niagara of the West," still put on a good show at the right time of year.

The only bridge in the United States where BASE jumping is legal without a permit year-round.

Home to the deepest rift anywhere on Earth.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

The first declared National Monument in the United States.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

A place where the laws of nature seem to have gone completely berserk... but of course haven't.

One of America's first dinosaur parks gives a window into Depression-era paleontology.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

Just a man taking his prehistoric pet for a stroll.

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

A fitting attraction for the corn capital of the world.

A roadside collection of over-sized iron creations that are a bit more macabre than most.

More than 7,000 gallons of water pour over these cascading red quartzite waterfalls every second.

These cliff and rock formations are made out of Sioux Quartzite.

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

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