Portland had a unique approach to Cold War-era protections.

These memorials built by an eccentric bachelor on the side of Interstate 5 cause both wonder and traffic accidents.

Home to the deepest rift anywhere on Earth.

This combination shop and museum is filled with curious items and artifacts.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

Massive still life just off the highway in Kansas.

Also known as the Cathedral of the Plains, this church holds the distinction of being one of the "8 Wonders of Kansas."

The United States's largest hand-dug well is topped with a state-of-the-art museum.

Built from oil field parts and resembling a teepee, this abandoned mid-century church is hoping for a comeback.

An immersive art experience built by local arts collaborative, Factory Obscura, in the building formerly known as The Womb, a psychedelic arts center founded by the frontman of the Flaming Lips.

This prison-turned-museum is a remnant of the Old West's grizzly, violent past.

This mining town boomed in the Atomic Age when uranium was gold, only to be abandoned when the industry collapsed.

Miraculous tree that seems to sprout out of solid rock.

One of the smallest towns in the United States.

The only retired U.S. nuclear missile silo that is open to the public.

See six states, pickled freaks, rocks, and antiques.

One of the Eight Wonders of Kansas and the first official National Natural Monument these stark formations look like nature's Stonehenge.

The first declared National Monument in the United States.

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

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

A beautiful geyser under environmental threat.

It is the only marker for one of the most famous hate crimes in American history. There are no other memorials for him in the entire state.

Home to Hollywood history and a very special salt crystal.

The world’s largest combined collection of U.S. and Russian aircraft got its start in a poultry building.