The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

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.

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

A fitting attraction for the corn capital of the world.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

One of the largest aviation events in the world brings half a million aircraft enthusiasts to Wisconsin each year.

A bizarre house filled with an astounding array of collections.

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

A stone face watches over the river.

An amazing collection of sculptures and art.

Thousands of people walk over this fantastic work of art every day, but how many notice it?

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

Home to the Amorphophallus titanum "Corpse Flower," which is among the largest flowers in the world and also smells powerfully of rotting flesh when in bloom.

The Midwest's reigning king of surplus stores is full of nothing you need and everything you want.

Eight "Guardians of Health" protect this art deco water tower from pollutants and bacteria.

This iconic water tower and failed bandstand is open for panoramic views once a year.

The only arched bridge made of stone on the entire Mississippi River.

This tiny chapel next to a highway provides weary travelers a place to rest, pray, or maybe even get married.

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

This beloved marketplace mascot poops money and grants good luck.

This elaborate towering structure was once famed for its revolutionary height.

Current docking place of the SS United States, the fastest transatlantic ocean liner.