A thin pane of glass keeps visitors from sliding off this futuristic skywalk.

A favorite with sightseers, this Norwegian funicular provides easy access to a stunning view of Bergen and its environs.

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

Stay overnight in the world's most sleekly designed rabbit hole, free of charge.

One of the most breathtaking railways in Europe also takes one of the steepest climbs, from fjord to mountain plateau.

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

An intricately carved Viking church overlooks a glistening fjord.

Walk 2,300 feet above the ground on the "Troll's Tongue."

Once the center of power for the region's various factories.

A water reservoir disguised as a castle stands atop a hill in a park in Stockholm city.

This building, previously used as a courthouse, has an unusual geological feature in its basement.

These waste baskets play a few risque messages to discourage littering.

This legendary dessert was served to Nobel laureates for decades.

A Very Low Frequency transmitter you can tune in on your PC.

At this bohemian accommodation, guests who dream of joining the circus can spend the night in themed wagons.

This Viking Age memorial contains the oldest known image of a Täby resident.

The fastest way to send a message before electricity was invented.

A cuddly version of a dark mythological creature now acts as the mascot of a town.

A centuries-old copper mine that once provided two thirds of the world's copper supply.

The world's largest underground iron ore mine.

These miniature works of art are hiding in plain sight on buildings around the city.