This historic electric train has operated with regularity since the early 1900s.

This spectacular bridge is part of an abandoned train line that once connected Mallorcan capital to the southeastern coast.

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.

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

This surreal statue brings a famous French novel about a supernatural cad to arresting life.

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.

Paris' linguistic guide to the international language of, yes, love.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

A collection of abandoned typographic signs from Berlin and beyond.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

Started as a kitchen garden, now the second largest botanical garden in the world.

A tree-like building perches on its trunk in the Steglitz neighborhood of Berlin.

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Get a close-up look at a 16th-century Basque whaling ship at this factory and museum.

Two large posteriors in one giant statue.

A historic Christian shrine nestled within a spectacular natural cave.

Giant topiary dog once played a role in a terrorist bomb plot.

Two towns are linked by an engineering marvel masquerading as a boring suspension bridge.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

This triumphal arch celebrating the Sun King's conquest of Lille is a masterpiece of military architecture.