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

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

No one knows who created the statues or if they are arranged properly—let alone the artwork's real name.

A domino effect created with Britain’s iconic telephone boxes.

Floating pink tap installed for a flower show in London.

A whimsical brother of the nearby Fallen Angel statue takes the falling part quite literally.

An ancient Egyptian temple in the middle of Madrid, Spain.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

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.

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

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

Catalonia Tradition: Beating the hollow Christmas log until it defecates in your fireplace.

A beautiful but toxic fountain of mercury.

Turntable anonymously received orphans, alms, and groceries.

A beautiful little museum hidden away in the heart of Barcelona holds a treasure trove of Ancient Egyptian artifacts

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

This magnificent market stands as a poignant symbol of the suffering caused by the Spanish Civil War.

Fascinating exhibits of prehistoric and ancient artifacts displayed with a uniquely modern touch.

Legends surround this natural rock formation that looks like a Moorish king wearing a crown.

A well-restored ancient archaeology site gives a real feel for life during the Roman age.

The "first cat," "first dog," and even a presidential pygmy hippo all get their due in this museum.

Abandoned railroad tunnel is home to a colony of three million Mexican free-tail bats.

More than a century old, this trading post resides in the Navajo Nation.