Some 2,000 carvings show this rare desert spring has been an oasis for travelers for over a thousand years.

More than 21,000 images fill this overlooked gem of a prehistoric site.

This quirky hot springs town known to locals as "T or C" was named after a radio show.

This is one really big nut.

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

Legends surround this jagged rock formation in the New Mexico desert.

A museum dedicated to the alleged Roswell Incident.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Home to the deepest rift anywhere on Earth.

The only road through the heart of Glacier National Park.

This shallow pit was once used to send over 20,000 buffalo plummeting to their death.

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

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

The first declared National Monument in the United States.

The world's largest Holstein cow.

One man's quest to save his town with a trail of record-breaking sculptures.

Just a man taking his prehistoric pet for a stroll.

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.

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