Although it has never been a secret ninja base, this shrine still has plenty of tricks up its sleeve.

The first Italian factory to produce locomotives is now a marvelous museum.

Nestled in Coachella Valley, this museum transports guests from the Mesozoic Era, to the land of Egyptian kings.

An exceptional assortment of fossils recovered from private collections.

Hidden deep in a forest is this geological wonder carved by glaciers.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

Apartment complexes built into huge repurposed natural gas tanks.

This abandoned bridge to nowhere stands secluded in the woods of a Cleveland suburb.

The meteor that sealed the fate of the dinosaurs landed at this site, one of the largest impact craters in the world.

A centuries-old copper mine that once provided two thirds of the world's copper supply.

Site of the first official transatlantic wireless communications.

One of the most valuable palace-garden complexes in the eastern borderlands—and one of the most haunted.

This historic iron-working village is now a ghost town so immaculate that it looks as though it was recently built.

The concrete skeletons of an abandoned Swedish town hide among the trees.

In the woods of New Jersey lie the ruins of a munitions village abandoned after World War I and the remnants of a 1920s wooden racetrack.

At the height of alum production at this factory, human urine was a valued commodity.

Before online banking and smartphone apps, there was "commuter banking" in the subway in Downtown Brooklyn.

The site of Japan's first major environmental disaster.

Accessible only by train, the beauty of Agawa Canyon Wilderness Park is worth the journey.

This scenic fortress dates back at least 2,400 years to the time of Magna Graecia.

The famous abolitionist’s preserved estate is one of Washington's finest monuments to its great Black citizens.

Built in a perfect square, this archaeological site is one of the largest and best preserved ancient fortifications in India.

The 16-foot sculpture of a hand looks out from his perch on top of an art gallery.

At the time of its construction, this hydroelectric power plant was the largest in the world.