A toxic ghost town sitting atop a massive coal fire.

Nicknamed the "Museum of Horrors," this French anatomical collection has been fascinating visitors for over a century.

The oldest university museum west of the Mississippi retains its 19th century feel.

San Francisco's newly reopened hands-on science museum.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Odd outsider art installations surround a Gold Rush-era ghost town.

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

Mysterious 500-year-old tapestries depict a unicorn hunt.

A Manhattan Episcopal church with an eerie underground crypt.

The highest point on the island known for buildings that touch the sky.

An abandoned horticulture institute gloomily presides over rows of derelict and vine-wrought greenhouses.

A graffiti Mecca welcoming artists from around the world.

One of only two commuter aerial tramways in the United States.

There must be a pun in this haystack somewhere...

This abandoned seaside fortress is now simply an imposing ruin being taken back by nature.

First a horse rendering plant, then a 19th century landfill, this beach is full of glass from thousands upon thousands of broken bottles.

The haunting, dilapidated remains of a former poorhouse on Staten Island's Greenbelt.

This decrepit abandoned building is made all the more eerie by its dark history.

A long abandoned hospital building on the outskirts of NYC.

The most unloved grain elevator in Brooklyn was a “Magnificent Mistake.”

A tunnel once abandoned now thrives with graffiti art as an off-limits makeshift gallery.

The very first subway station in New York City is beautiful, decked out in chandeliers, and ... abandoned?

From scholastic to sepulchral - now under reconstruction.