This Nazi ruin was the site where Hitler was almost blown up by a suitcase bomb.

This tower in a small Polish village uses the power of a sacred bell to ward off mischievous weather spirits.

A national collection of Communist-era musical posters.

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

These mechanical goats first battled it out in the year 1551, all because of an overcooked deer.

Double spiral staircases are not unheard of, but they are very rare.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

Once a giant gingerbread factory, this space now hosts exhibits and workshops on the historic treat.

The shell of a medieval fortress offers commanding views of the area it once protected.

The traditional Polish croissant, folded 81 times into the shape of a horseshoe, is a legally protected cultural treat.

Come to this Polish museum to take a good, clean look at filth.

An abandoned Nazi explosives plant founded by the inventor of dynamite is now an underground museum.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

These massive moving sand dunes have swallowed an entire village and are still on the run.

This open-air museum was originally a World War II testing ground for German missiles and rockets.

An artificial hill and apparent calendric structure built in the Early Middle Ages immortalizes a legendary Polish princess.

Polish luminaries and masterful folk art find sanctuary in this unique cemetery.

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

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

In the midst of a living monument to Soviet social engineering, Polish Catholics built this church by hand.

Crosses of all shapes, sizes and colors litter the mountain, the site of a huge yearly Orthodox pilgrimage.

Old cabin-like homes in a rural community untouched by time are known for their vibrant and colorful window shutters.

Go surfing on this urban wave, "hacked" by local surfers.

Across the Pacific in a raft, a museum dedicated to Thor Heyerdahl's now legendary expedition.