Marie Antoinette and Napoleon Bonaparte were fans of this 200-year-old French chocolatier.

The approximate spot where the last Grand Master of the Knights Templar was put to death.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

Once a 19th-century brasserie, this McDonald's exterior celebrates Alsatian design and the "King of Beer."

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

Indents in the pavement are all that remain from a grisly death machine in Paris.

Notorious artist squat renovated into legal studios.

A subterranean shelter remains intact under a busy Paris railway station.

Abandoned railway line circling the city of Paris.

This dreamy street will transport you to wintertime in Victorian England.

Hidden on the urban banks of a Manchester river are a series of abandoned waterside industrial sites.

A relic of the Cold War tucked away in the forested hills above Bratislava.

Football field-sized microalgae production tanks on the Hawaiian coast create a stunning view from space.

This former luxury resort in Kaua'i is now an abandoned relic.

A Hawaiian stairway to heaven—that you can't climb.

Formerly a lovely white sand beach this Hawaiian stretch is now a trap for countless tons of trash.

This World War II-era bunker is now packed with posters and props from movies and TV shows filmed nearby.

Get up close and personal with these majestic fish.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

A once-glowing grotto at the bottom of Waikapalae Wet Cave.

A series of waterfalls and pools that flow through the 'Ohe'o Gulch and into the ocean.

A museum dedicated to a Cold War era sausage.

An abandoned swimming pool decays on the outskirts of Berlin.

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.