Willy Wonka would love this weird half-a-home.

Lost subway station nestled beneath Toronto's busy commuter line.

A well-preserved network of cavernous tunnels have spent silent centuries removing Toronto's waste.

A botanically themed auditorium blooms within the world’s last operating double-decker theater.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

It was an experiment to prove that glacial boulders and rocks can be used in constructions and dwelling.

This "cursed house" features secret rooms, hidden vaults, and dark escape tunnels.

A piece of the iconic wall found an unlikely new home in a Vegas bathroom.

There are two legends behind the origin of this unusually tall sanitary structure.

A public urinal so pretty, it was declared a national monument.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

Norway has built what may be the world's most beautiful public toilet.

A masterpiece of LGBT art has been restored in what may now be the most valuable restroom in America.

A mysterious tunnel hidden in the shadows of a colorful, historic sanctuary.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

Abandoned railway line circling the city of Paris.

Pitié-Salpêtrière was the dumping grounds for women who received the dreaded diagnosis of "hysterical."

This banal Parisian entranceway is not what it seems.

In the U.K., a historic workhouse shines a light on the early, harsh treatment of the poor.

There's a labyrinth of medieval chambers hidden deep below a 15th-century pub.

When it came to designing his own small office building, the eccentric architect wasn't afraid to show the world what he could do.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.