A hidden "place of interment for gentlemen."

A toxic ghost town sitting atop a massive coal fire.

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

A posh members-only club with a literally dramatic history.

Quality time with reindeer in the stunning scenery of their natural Lappish habitat above the Arctic Circle.

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

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

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

Erotic art covers the walls of the largest ancient pleasure palace.

The trials and tribulations of marking Poe's grave.

This disastrous New Jersey safari park saw animal attacks, escapes, and disease before being abandoned.

A replica viking ship from the Chicago World's Fair is still in dry dock in an Illinois park.

Five ancient libraries, little changed for centuries, preserve a medieval archive of Quranic lore and civic documents

A giant white horse drawn on an English hillside may not have been intended to be a horse at all.

A remarkably intact castle that once was the largest in Ireland.

The final resting place of the Emperor of the United States and Protector of Mexico.

A mysterious painting of the self-declared Emperor of the United States watches over a local hof-brau.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

An extensive collection of ancient Egyptian artifacts and mummies.

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

The memorial to the victims of the Jonestown Massacre carries the names of 918 lost, including one name people wish wasn't there.

The last of its kind in the country.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.