Gigantic water vessel, permanently grounded in Southern Albania.

The largest Roman amphitheater in the Balkans once held over 20,000 people, but managed to lay hidden for hundreds of years.

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.

This demon atop the Notre-Dame de Paris looks utterly bored.

This lesser-known Frank Gehry building houses a treasure trove of cinema history.

The celebrated eyesore created by starry-eyed sweethearts.

During the summer months, giant teddy bears take over Paris near Les Gobelins metro station.

The video game-themed street art first popped up in the French city.

A beautiful Victorian statue shows France's enduring love of the rhinoceros.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

This emotive sculpture was originally created for the 1878 World's Fair.

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."

"Drunken ship" sculpture memorializing the French poet in the city where he died.

Longest canal tunnel in the world, abandoned in the 1960s.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Go surfing on this urban wave, "hacked" by local surfers.

A fearsome dragon clings to a corner of Munich's city hall.

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.

This small Estonian hill is covered in hand-made twig crosses that are said to bring good luck.

Wars fought and wars won are remembered by these abandoned bunker ruins.

A little sculpture with a large wardrobe.