Considered by many to be one of the most dangerous highways in Alaska.

Colorful boxes placed over the dead are left to rot and crumble.

This WWII-era military installation once held an entire city within its walls - now, its walls are falling down.

The sculpture's largest spire points directly toward the North Star.

This super-sized statue is the only public memorial to the deal that ended America's neutrality during World War II.

This fresco-covered medieval monastery hangs from the side of a steep cliff.

Religious perseverance and cultural coexistence manifest in an architectural gem that multiple wars couldn't topple.

Ride in 1960s style on the private luxury train Marshal Josip Tito used to travel around Yugoslavia.

Legends of treasure and spirits flow from this this fairy tale-like oasis.

A Serbian monument to plums.

In the hinterlands of Serbia's capital, a giant reflective mushroom houses an aeronautical history of the former Yugoslav republic.

A Roman monument to their own civil engineering prowess.

Abstract monuments express sorrow and resilience at the site of a horrific massacre in Nazi-occupied Serbia.

This 15th-century Serbian Orthodox monastery also contained a school for illuminating manuscripts.

Hundreds of thousands of concrete bunkers crowd Albania long after the fall of Communism.

The cross-shaped memorial is filled with kitschy tributes to the late pop star.

This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

This World War I fortress is the perfect place to catch a Montenegrin sunset.

One of the world's oldest olive trees, thought to be over 2,000 years old.

A pair of connected skyscrapers form this symbolic gateway.

Stone age urban planning.

For over 40 years, this quaint little house has teetered on a rock in the middle of a river.

An idyllic traditional timber village on a picturesque hill was built for a film.

Through the colossal entrance to this cave you'll find limestone tubs and an underground waterfall.