The narrowest street in Canada was once a spot for dastardly doings, now a historic piece of Chinatown.

Brass cobblestones mark the places where individual Holocaust victims were taken from their homes.

This South London cemetery holds the remains of more than 15,000 people.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Dug as a secret royal escape route, the tunnel became a wartime bomb shelter and dumping ground for vintage cars.

Possibly the world's largest coin stands just outside of a Canadian science center.

This ambiguous pig shrine is actually a monument to a beloved queen.

A condom-covered Thai restaurant that is more concerned with birth control than food.

Greenery cloaks this serene sculpture inspired by the famous Lost Gardens of Heligan.

A wall of chewing gum moonlights as collective art.

This expansive bridge in the Canadian wilderness was originally just built for friends.

The mountaintop wind turbine boasts a viewing deck — and a fair share of controversy.