Artists and musicians now rule over this former rail station.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

Visitors are treated to a stained glass kaleidoscope interior inside this work of art.

Bored potato-guarding Nazis etched their thoughts onto a brick storage building in Copenhagen's Meatpacking District.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Hans Christian Andersen for the postmodern world.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Pre-Nazi swastikas adorn the sculpted pachyderms flanking this brewhouse portal.

Copenhagen's celebrated theme park and gardens.

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 bridge was constructed from the rubble of the infamous Bastille.

Buying your medicine at this particular pharmacy is like taking a trip back in time.

Spanish religion mixed with local architecture has yielded a network of churches unlike any other.

This iconic hilltop church doubled as a lighthouse in the 19th century, guiding ships into the port of Valparaíso.

A fantastical and futuristic temple of light built from nine monumental glass veils.

A sculpture of a giant hand reaches for the stars in the middle of the Atacama desert.

This museum covers 10,000 years of Pre-Columbian Latin American history.

How a lunch counter in Chile became a shrine to the 42nd president of the United States

A labyrinthine underworld of tunnels and caverns hides beneath the city.