Is this a portal to another side of the cosmos?

A pyramid in Central Europe of unknown origin.

Two nations form a rare four-sided border at the peak of a mountain, philosophical questions result.

At this exhibit on the world of poison, venomous animals steal the show.

German and American troops joined forces to defend this fortress during the strangest battle of World War II.

A breathtaking viewing platform over the Alps.

Amidst medieval and baroque buildings, five human-sized gherkins stand tall.

Archduke Ferdinand II's collection of rare objects is considered one of the oldest museums in the world.

"World machine" built by an untrained Austrian farmer.

American soldiers discovered Europe's best one-liner at the end of World War II.

Resting in the middle of an Austrian river, this sci-fi "island" lets people cross in neon style.

On a winding Vienna side street, one museum has turned their windows into a monument to history’s peace-minded heroes.

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.

Ride a dragon train into a world of dwarves.

Inside the corridors of this flea market, visitors are sure to find some obscure and odd treasures.

A centuries old castle atop a dormant volcano houses museums devoted to both women and witches.

Each year melting snow turns these Austrian hiking trails into scuba zones.

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

The beautiful baroque library of the Hapsburg empire.

Europe's second largest ossuary wasn't discovered until 2001.

Mummified monks and the accidentally interred, in a 17th-century crypt.

This Romanian village may have been drowned, but it is long from forgotten.

Once the legendary capital of the Dacian Kingdom, this city has been reduced to mere ruins.

Climbing to the top of the cathedral's bell tower offers sweeping views of these medieval ruins.