A tiny racehorse graveyard in the middle of a quiet Kansas City suburb.

This sinkhole in the Arizona desert is filled with carbonated, arsenic-rich water

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

The unusual burial monument of Arizona's first governor.

This rustic cabin, outfitted with gun slits, was once home to John D. Tewksbury, patriarch of the bloodiest family feud in American history.

Once a year, at exactly 11:11 a.m., this monument comes to life.

These markers are used to document elevation changes around the famed dam.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

Experience a charming 1930s version of "infotainment."

A lovely park home with a few interesting guests.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

Nevada's largest cactus collection stands outside a candy mogul's small factory.

A unique shopping and dining park created from old shipping containers and filled with local businesses.

The birthplace of Las Vegas is now preserved as a historic and natural area.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

A huge musical instrument played by the ocean.

Believe it or not, this is the final resting place of the man who created the Odditorium.

A tribute to the life and work of the beloved "Peanuts" cartoonist.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Boats and fish both find their way through this massive hydroelectric structure.

You might know it as the Overlook Hotel, but the inside is not going to be familiar.

Despite a legend that says this highest peak in Oregon was climbed in high heels, scores of people have died on its slopes.