A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

America's most famous piece of self-built architecture.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

World's largest collection of serial killer artwork and other macabre exhibits.

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

The burial grounds of a secret society includes fences topped with fake Tesla balls.

An enthusiastically interactive mining museum that won't let black lung ruin the fun.

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.

A research lab and hands-on museum where visitors can experiment with retro technology.

Colorado's only true geyser is hidden within the San Juan National Forest.

At one time this small mining village was the highest town in America but now it sits abandoned while the mine churns on.

Hidden beyond a kitschy giant beetle is this remarkably sprawling collection of preserved insects.

This hot dog-shaped diner has moved all around Colorado, never been to New York.

A futuristic hovertrain is parked unceremoniously alongside a nondescript road.

Possibly the world's only drive-in movie theater with an attached motel.

An impressive collection of over 50,000 minerals including moon rock from the Apollo 17 mission.

Once an unstoppable source of gold and silver, this town came to a grinding stop when the groundwater proved deadly.

A collection of over 15,000 zines works to preserve DIY publishing culture.

The world's largest key collection features keys to the White House, Frankenstein's castle, and Hitler's bunker.

The largest dinosaur trackway in North America is tucked away among this canyon's ghosts and archaeological gems.