A serpentine highway twists and turns over the treacherous Norwegian Sea.

The world's largest moose statue towers above the highway between Oslo and Trondheim.

This giant boulder is pinched over a 1000-meter abyss by two mountains.

The world's largest underwater restaurant is submerged off the southern tip of Norway.

This Danish castle is supposedly haunted by a woman too independent to not be a witch.

An old limestone mine transformed into a beautiful and unusual sculpture museum.

A walkable map of the world, made from soil and stone by one man.

Nearly 40 miles and 1,000 years of limestone mines under Denmark.

Denmark’s never-ending bridge.

Denmark's famous pseudo-hill.

This ominous Albanian fortress houses tanks and downed planes as a reminder of their victories over Western imperialism.

A medieval bridge stretches over a sulfur-rich river that leads to year-round natural hot springs.

Gigantic water vessel, permanently grounded in Southern Albania.

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

Bronzes and busts that once stood in the city's main squares are now relegated to a small hidden courtyard.

Once the fallout shelter of a dictator, this sprawling bunker is now a combined history museum and contemporary art gallery.

The largest Roman amphitheater in the Balkans once held over 20,000 people, but managed to lay hidden for hundreds of years.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

A neolithic tomb converted into a tiny chapel.

This crumbling Portuguese ruin overlooks the populace it once ruled.

Pagan monument converted to Christianity with the population.

This abandoned fortress still stands guard over the Guadiana River despite a history of warfare.

The ruins of a 16th-century bridge loom over Olivença's sovereignty.