A former top secret nuclear fallout shelter now operates like a hotel stuck in the Cold War.

The decaying ruins of Wales' first asylum for the mentally ill.

The world's northernmost aquarium looks like it has fallen over.

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

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

Thousands of years of crashing waves gave this mushroom-shaped rock its svelte figure.

An intricately carved Viking church overlooks a glistening fjord.

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

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

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

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

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

Walk behind a 50-meter-high waterfall.

Ruins of two abandoned stations destroyed by the power they sought to harness.

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

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

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

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

An artist's mausoleum with a haunting echo.

The painter of "The Scream" is laid to rest under a stoic bust of himself in the humble corner of an Oslo cemetery.

These crumbling Nazi artillery bunkers are now fair game for massive graffiti projects.

Museum in a swimming pool where the water still flows.

This Belgian theme park began as a refuge for bored church children and was closed down when a boy lost an arm.

A rare example of World War I trenches from the British front.