Caves famous for the dragon-slaying saint who lived there.

A monument to peace, built by one man over the course of 25 years.

This medieval footbridge in the Swiss Alps is known to attract cliff-jumping daredevils.

The second-highest train station in Europe.

Its vast collection of wondrous gadgets details the fascinating history of information technology.

A trove of ridiculously valuable prints and manuscripts under one roof.

One of the highest emergency huts in the world has been waiting almost a century to give imperiled climbers a place to lie down.

A tower-like theater in the Swiss Alps built to withstand the high winds and avalanches of the mountain pass.

These 4,444 wooden steps straight up a mountain were built to serve a hydroelectric power station but these days, they're mostly used by hikers.

This mountainside mural of a person carrying a torch was created for the 1994 Winter Olympics.

The remains of a German plane still sit in the Norwegian wood where it crashed in 1942.

This strange pyramid is a unique feature of the Austrått Manor.

Citizens of Norway want to gift the peak of Mount Halti to Finland for its 100th birthday.

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

Research station devoted to mysterious floating lights seen in a Norwegian valley.

The last fully functional fortress of Germany's World War II Atlantikwall.

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

A naturally occurring tunnel in this Nordic mountain makes it look like it's been shot.

The largest cave in Northern Europe.

Oslo's historic toboggan run has been letting thrill seekers slide from train stop to train stop for over a century.

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

According to the locals, the sands of this secluded Norway beach are infused with gemstone particles.

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

Walk behind a 50-meter-high waterfall.