Built in 1911, the Tees Transporter Bridge is one of only six transporter bridges still in operation.

Abandoned Nazi train station turned underground astroparticle laboratory.

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

To avoid the demolition costs this abandoned drawbridge was simply left in the up position.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

The elegant structure of this 19th century railroad bridge creates an illusion of infinity.

A collection of haunted artifacts chronicles the career of the world's most famous paranormal investigators.

A storefront museum in Asbury Park honoring the Jersey Shore’s deep history of mystery—including the Jersey Devil.

A reservoir of vintage pinball machines and arcade games for the nostalgic and thrill seeking.

A one-of-a-kind collection of a unique medium.

Where beautiful signs live on forever.

One man's vast collection of artifacts and ephemera from matchbooks and postcards to vintage neon signs and cars.

The world's largest collection of fine-scale miniatures and one the nation's largest collections of antique toys.

This institution collects the history of burlesque dancing with a titillating collection of ephemera and pasties.

A seven-century-old jail tells a not-so-pleasant history of crime and punishment.

A series of modernist treehouse hotel rooms grace the outskirts of an Arctic forest.

This former Indiana quarry has been transformed into a park and SCUBA site where divers can explore the drowned mining equipment.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

The Avenue of Mausolea is a series of grand palatial tombs.

The Underground Railroad passed right through this historic Brooklyn Heights church.

The Vatican of the movie industry turned into an actual church.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

What was once one of the country's largest confectionary plants is now an abandoned ruin, but is still pretty sweet.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.