Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

An abandoned mine now resembles a post-apocalyptic landscape of derelict buildings and blood-red pools of water.

The garage at the childhood home of Steve Jobs was a hangout for the founders of Apple, even if they never built computers there.

Because sometimes the most efficient route from A to B isn't a straight line.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

You'd never know the houses at 23-24 Leinster Gardens were fakes—until you see the train tracks on the other side.

Abandoned bridge hidden deep in the San Gabriel Mountains.

The world's largest radiation field is probably our best bet for irradiated vegetable superheroes.

At this California chicken ranch, four bucks will get you 18 eggs and a chorus of dancing animatronic poultry.

Watch out for the two-story Godzilla made out of tires.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

Potential high level nuclear waste storage site for the next 10,000 years and beyond.

The largest man-made crater in the U.S. marks the spot where we once tested mining with nukes.

Back in 1952, you could get a mushroom cloud chaser with your atomic cocktail.

A picture-perfect town, perfect for blowing up.

An acoustic anomaly with a mysterious cause.

A dormant lightning machine equal to all the power in Russia.

The home of aviation trailblazers, in a remote corner of the big city.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

Hidden in plain sight on the Hudson River is an abandoned train station where nature has taken over.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

A giant open-air sculpture made of over 200 full-sized boats.