With a floor made of thick glass, this observation deck offers a full view of Sunwapta Valley's mountains and rivers.

These 5,000-year-old cave paintings provide a glimpse into prehistoric Finnish life.

The smallest restaurant in the world.

In the Hugging Tree Forest, lingonberry marshmallows, hot chocolates, and the best campfire lattes north of the Arctic Circle come to you.

This fantastical icy castle is built anew every winter.

Site of the world's largest nuclear explosion.

This Arctic mining town is home to a cat that's spent years masquerading as a fox.

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

A stunning silver lining to global warming's gloomy cloud.

An intricately carved Viking church overlooks a glistening fjord.

This "preacher's pulpit" once used for pagan ritual, is home to a new, and dangerous ritual.

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

This luxury hotel suite is located deep in the bowels of an old mine.

Gravity seems to fail at this intriguing Swedish attraction.

This once-mighty brick factory is now a unique museum experience.

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

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

The world's northernmost ice hotel.

This functioning parish church is also the site of many concert performances due to its wonderful acoustics.

A series of modernist treehouse hotel rooms grace the outskirts of an Arctic forest.

The rusted hull of a WWII German destroyer pokes above the surface in a Norwegian fjord.

A golden egg-shaped sauna in the Arctic tundra.