A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

This tiny business claims to be "the smallest pub on the planet."

Once thought to be the mysterious work of a witchy prophetess, a well with unusual properties turns objects into "stone".

These small sculptures pay homage to the lovable star of an iconic Argentine comic strip.

An intriguing antique iron Ferris wheel that most locals are sure was designed by Gustave Eiffel.

A bright little alley in La Boca is a part of tango history.

A fantastical group of cliffside stairways, bridges, and twisting paths carved out of stone provide a surreal coastal hike.

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

This odd Chilean waterfall-cano hotel must be entered via a rope bridge.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

Invisible bridge parts the waters, invoking biblical images and preserving the ominous feel of an ancient moat.

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

Colorful and chaotic stacked hotel in North Holland.

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

Carved initials which are nearly 500 years old preserve the deposed Queen's presence at Hampton Court Palace.

Chelsea's soldiers were given strict orders when crossing this historic bridge.

Visit the WWII bunker where the British won the battle for the skies.

The world's first underground farm is in a World War II bomb shelter beneath the streets of London.

A marine aquarium with an astounding variety of fish hides in the basement beneath the famous Palm House.

This German "living museum" is maybe a bit too immersive.

A two-inch thick solid brass rod that extends an astounding one kilometer straight into the earth.

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

The only microgravity tower in Europe can produce nine seconds of weightlessness.