This eccentric folly house was designed by Romanian thinker Bogdan-Petriceicu Hasdeu, with a helping hand from his deceased daughter's spirit.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

This enormous abandoned prison was once dubbed the "Bastille of Romania."

This solitary monastery may hold the remains of Vlad the Impaler (but probably not).

This demon atop the Notre-Dame de Paris looks utterly bored.

World's largest cave was only discovered in 1991, and now offers tours to the public.

According to the local legend, these boys and ducks were turned to stone by an angered water goblin.

An ode to a soldier who came to town, fell in love, then began making his own sparkling wine.

A cableway for car transport.

The largest fountain in Bratislava.

A memorial to 350 people burned at the stake for witchcraft.

Housing the famous Norwegian ice-defying 19th century polar exploration ship.

A Viking-style brewpub named for a Norse sea giant, in the heart of fjord country.

One of the most breathtaking railways in Europe also takes one of the steepest climbs, from fjord to mountain plateau.

Large military radio station without transmitting towers.

Standing in for the first ship to navigate the Northwest Passage.

The home of president Truman during the Potsdam Conference, and the place from which the atomic bomb strike on Japan was triggered.

A memorial commemorating the place where Truman gave the order to deploy the first nuclear bombs on Japan.

A park dedicated to the titular writer filled with references to his work.

In a divided Germany, Potsdam's "central" train station was relocated to the city's southern suburbs to avoid West Berlin.

The bridge that cost Germany a World Heritage Site.

An abstract and eyecatching clock/fountain is the centerpiece of this little-known German city.

This medieval cathedral houses stained-glass windows featuring saints and pretzels.

This unique medieval artwork featuring the story of the Antichrist remained lost for decades.