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

An eatery for UFO seekers on the Extraterrestrial Highway.

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

This small museum gives visitors a chance to soak up the history of the "sponge capital of the world."

There was a top secret plan during World War II to seal a group of soldiers inside the rock.

The mysterious large white cross visible from the runway is a memorial to a massacre during Spanish Civil War.

The fifth tallest statue in the United States is a shirtless monument to the oil worker.

A hillbilly theme park that proved so unpopular the land wouldn't even sell on eBay after it closed.

This monumental Jesus is often referred to as "Our Milk Carton With Arms."

What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

See massive fossils that are over 200 million years old in northeastern Arizona.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

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

The first declared National Monument in the United States.

A fitting attraction for the corn capital of the world.

One street divides a single town that stands in two U.S. states.

This mill has survived a tumultuous past to still produce flour and cornmeal.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

With roots dating back to 1942, this retro diner was where Hank Williams is said to have uttered his last words.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

The largest self-built castle in the U.S., six decades in the making.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

This set of hot springs also comes with fantastic views.