A statue commemorate Tommie Smith and John Carlos's brave protest at the 1968 Olympics, a watershed moment for civil rights.

A life-sized mammoth sculpture marks the spot where the remains of a Columbian mammoth were discovered in 2005.

The rest of him lived another 61 years and was buried elsewhere.

The headquarters of a secretive order is also a beautifully-designed park.

An extensive collection of ancient Egyptian artifacts and mummies.

San Francisco Bay's ghost town.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

Housed in a memorial lighthouse, this museum relays the history of surfing, beginning with the antics of royal Hawaiian teenagers.

Graffiti-covered ruins that were once part of a farm owned by a mental hospital.

The site of the "Bone Wars" between two rival paleontologists during the dinosaur rush of the 19th century.

Climb to the top of this spiritual tower, and you'll be rewarded with spectacular views.

This three-mile concrete levee in Pueblo, Colorado was transformed into the world’s longest painting.

This small piece of railroad history sits behind the parking lot of a chain grocery store.

A roadside attraction filled with an astounding array of gloriously wacky vehicles.

This 19th-century ranch is being transformed into a residential library with thousands of books about the natural world.

The world's largest sticker ball weighs in at a mighty 231 pounds.

Hidden high on a remote mountain peak is a humbling and mysterious Vietnam War memorial.

This 19th century jail was mainly used to incarcerate the drunk and disorderly.

The remains of an early 1900s dude ranch that operated until the 1970s.

Each year, teams of the world's best snow sculptors have 65 hours to create frozen masterpieces.

In the middle of a suburban Denver neighborhood is a cave that once provided solace for a prominent Ute chief and his family.

16,500-acre ranch filled with American heritage, geological wonders, and a giant pile of tires is the crown jewel of an intriguing tug-of-war.

Over 1.3 million confiscated wildlife products fill this macabre menagerie of illegal animal specimens.

The wreckage of a World War II bomber is hidden high in the Colorado wilderness.