Longest road tunnel in the world features an air treatment plant and the illusion of daylight.

At the very tippity-top of Europe is a cliff from which you can view the midnight sun.

Monuments don't get much more metal than these three giant viking swords planted in a Nordic hill.

Walk behind a 50-meter-high waterfall.

The burning of this 12th-century church kicked off a campaign of Norwegian Black Metal terror.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

The convergence of two currents makes this a surprisingly pleasant getaway in the Arctic Circle.

According to a local legend, this old castle could only be built after a woman was immured in the walls.

What happens when you cross a mayor and a painter?

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

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

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

A naturally beautiful, seemingly bottomless deep blue spring.

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

This beautifully preserved Ottoman house is steeped in history.

Communism's topsy-turvy effect on Poland has been brought to life in this wacky tourist trap.