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

The risqué mixed-media sculptures are supposedly a metaphor for Czech politics.

The first museum in the world devoted to sexual gadgetry.

Street artists transformed an abandoned air vent into the beloved Star Wars robot.

A completely underwater art museum sends a stark message about humans' impact on the environment.

A cemetery in Barcelona's Poblenou district is home to this touching funerary statue, which depicts death in the form of a winged skeleton.

This house's itty bitty size means no humans allowed.

At the foot of a waterfall lies a peaceful swimming lagoon and evidence of over 60,000 years of human habitation.

A museum dedicated to the Spanish occult in a town that was terrorized by the Inquisition.

Bacteria and algae give the salty water its bubblegum hue.

Mountain where Jesus was first tempted by the Devil.

An unusual stroll through gentlemen's erotica demonstrates that pornography is timeless.

This semi-secret storybook hedge maze is also the oldest garden in the city.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

The world's most important buildings shrunk to a tiny size.

This cutting edge museum details the history of skiing, from its ancient origins to its status as a sport.

France's national museum of scientific and industrial instruments.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

The oldest stone house in Paris was built by its most famous alchemist.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

Notorious artist squat renovated into legal studios.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Discover the mummified remains of Ancient Egypt in the middle of metropolitan Tokyo.

A King Kong-like gorilla hangs from the top of this commercial building in Tokyo.