One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

This unusual structure may be on its way to becoming a cultural landmark in Toronto.

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.

A collection of more than 12,000 shoes, displayed in a building shaped like a shoebox.

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

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

Smallest house in Toronto sits on a lot meant to be just wide enough for cars to drive through.

This "Palace of Purification" has made many film appearances as a dark and sinister headquarters.

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

This colorful creation wasn't always a welcome part of Toronto's Moccasin Trail Park.

The ghosts of Britain's telecommunication past sit rusting away in a small village in England.

The remains of the concrete ship can be seen during low tide.

Though they've since been renamed, these two streets hint at Dublin's darker days.

People escaping slavery may have hidden inside a corpse vault.

Though its branches are painted bright colors by generations of locals, the tree is said to be a haunted portal to hell.

The world's largest prehistoric copper mine had 30,000 animal bones scattered throughout the maze of passageways.

This professional clown's home is an outsider art wonderland.

A historic neighborhood church is reborn as a psychedelic arts collective.

600 stumps, branches, and trunks of different shapes and sizes.

The towering Pinocchio stands 63 feet tall in the Italian village his creator frequented as a child.

The mystic whose incorrupt corpse still attracts the faithful.

A rare pod of derelict midcentury Futuro and Venturo houses lines a semi-abandoned beachfront resort outside Taipei.

The second-longest continuous wall on the planet protects a hidden secret in the deserts of India.