Built by crowdsourcing, this wooden foot bridge saved a part of Rotterdam that was languishing in wait of city funding.

The Rozenberg wind wall in South Holland makes for smooth sailing through the Calandbrug canal.

Rotterdammers' dirty minds gave this santa a dirty nickname and cursed it to a life of wandering.

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

The air force base preserves its scars from the Japanese attack on Pearl Harbor.

An open-air museum in a mountain valley features works designed to blend in with—and disintegrate back into—their natural surroundings.

A fake medieval village in the middle of Turin.

Go inside to really appreciate this 500-year-old technological masterpiece.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Natural cathedral designed by Italian artist Giuliano Mauri.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

Romania's triumphal arch looks out over Bucharest.

The preserved arm of a third-century sorcerer is believed to have the power to lift curses and spells.

The bust of Romania’s most notorious ruler, Vlad Dracula aka "Vlad the Impaler," keeps watch over the ruins of his medieval court.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

Swarovski's museum/theme park is a fake diamond fantasia overlooked by a giant.

This splendid tomb may look fantastic, but there's nothing in it...

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

Hidden for 165 years inside a building designed by Thomas Jefferson are the remains of what may be America's first educational chemistry lab.

Edgar Allan Poe's old dorm is now a shrine to the author's legacy.

A real plaque marks the spot where a Faulknerian character committed fictional suicide.

The oldest farmer's market in America is so ancient it was approved by the King of England.

Less a museum than a bizarre fantasy world created by artists and engineers.