A 90-year-old underground water reservoir offers a more industrial kind of tranquility.

A sculpture made of 10 Cadillacs as a monument to the “Golden Age” of the American automobile.

A modernist landscape of water and sci-fi concrete.

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

A monument to the egos of two railroad magnates that fell into decline along with their careers.

Despite being burnt down multiple times, the ruins of this South Carolina church are still standing.

A mailbox that saved a nature reserve.

Garden dedicated to native carnivorous plants and site of huge flytrap heist.

This bright yellow relic is the final survivor of a short burst of seashell-shaped petrol pumps.

In 1967, murder and mayhem disrupted the tranquility along this quiet stretch of Old Route 66.

Thousands of pieces of art have been carved into the rock at the site of an ancient volcanic eruption.

This volcano rises like a giant anthill from the plains below, with a road spiraling up to the rim.

This is one really big nut.

The old Route 66 town straddling Texas and New Mexico died along with the Main Street of America.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

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

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

A surreal, interdimensional shopping center and portal to another universe by Meow Wolf.

This arid landscape was once a lush wetland. Today, it's a paleontological site filled with fossilized mammoths, sabertooth cats, and more.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

Flashy signs from Las Vegas’s past find their final resting place at this unusual graveyard.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

The first rural cemetery west of the Mississippi is home to the elaborate tombs of St. Louis' local beer barons.

What was meant to be a temporary exhibit is now a permanent fixture at the St. Louis Zoo filled with beautiful birds.