Giant pinnacles in the sun-scorched lands of Southern Utah have been nicknamed "white ghosts."

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

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

Sandstone rock formations that look like they belong on the cover of a progressive rock album.

The longest living non-clonal organisms on Earth.

The ghost town that ended up on Ebay.

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

Finale of "William Tell Overture" can be heard as drivers pass over grooves in the road.

Eons old volcanic activity created one of the most stunning rock formations in the United States.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

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

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

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

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

An ancient capital city that dates back 3,000 years old and harbors many surprises.

Rippling sand dunes frozen in the Arizona rock.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

Outposts of this restaurant chain were shaped like jaunty chapeaus.

Historic funicular railway, believed to be the shortest railroad in the world.

Playable, historic pinball machines fill this Alameda museum.

Dive bar built out of the remains of a whaling ship.