The northernmost point in Denmark is a turbulent sandbar created by two clashing seas.

Tiring of digging out the door to this church for every service, it was eventually abandoned to the sands.

An abandoned lighthouse awaits its destiny: being buried under shifting sand.

Denmark’s never-ending bridge.

This colorful artistic feature atop a Danish art gallery allows visitors to stroll through a rainbow.

Remnants of the Nazis' occupation of Denmark linger along the sand.

Along this stretch of beach in Denmark resides several massive bastions of energy.

These old World War II fortifications have been transformed into an unusual equine attraction.

A climbing route in the mountains of Italy’s Dolomites, built for soldiers during World War I.

Each year melting snow turns these Austrian hiking trails into scuba zones.

Dine amidst exotic plants at this former royal greenhouse.

This amazing pedestrian suspension bridge in the Swiss Alps would give Indiana Jones nightmares.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Go inside to really appreciate this 500-year-old technological masterpiece.

In the past, Renaissance sex workers were encouraged to entice customers on this bridge.

This centuries-old Italian chapel hangs midway down a sheer cliffside.

A small island in Lake Garda that was used as a burial site, pirate hideout, and a monastery.

This winding road through an Italian canyon may be the most scenic drive in the world.

A once-thriving hotel in the Swiss Alps couldn't compete with climate change.

A breathtaking bridge that crosses a vast gorge over a river's torrents, and has a tale of a devil architect attached.

A cablecar-station-turned-revolving restaurant with 360-degree views of the Swiss skyline.

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

The world's most active stratovolcano is almost always erupting.