Secret North Korean passage discovered below the world's most dangerous border.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

This attraction was abandoned after the Chornobyl disaster.

Monumental sculptures guard many of the graves, transforming this necropolis into an open-air fine art museum.

One of the world’s best microminiaturist, Nicolaï Siadristy displays his lifetime of tiny creations in this museum.

The haunting complex honors the millions of Ukrainians who died in the forced famine under Soviet rule.

The deepest metro station in the world.

One of the largest museums in Ukraine remembers the story of the German-Soviet War in iconic, brutalist style.

340-foot statue built to honour the Heroes of the Soviet Union.

A reconstructed medieval gateway that was the magnificent entrance to the capital city dating back to 1037.

This unassuming museum's slogan translates to “there is a limit of sadness, anxiety has no limits."

10,000 flowered plants bloom in the City of Roses.

Statue of Lenin, from Cold War era Czechoslovakia, now in a neighborhood of Seattle.

Allowing humans and fish alike to migrate from freshwater to saltwater and back again.

This Puget Sound military post has a long, turbulent history as a gateway to the Pacific.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

A museum dedicated to the history and exploration of both popular music and science fiction.

A giant Troll lurks under one of Seattle's oldest bridges.

The colorful, smiling concrete silos of Vancouver.

What happens when a sculptor has to find a way around a 100-year-old copyright.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

This isolated and westernmost point of the Faroe Islands archipelago is home to thousands of seabirds.

The narrow passages will challenge even the bravest driver.

In Faroese legend, this sinister horse-shaped beast lures unsuspecting passersby only to drown them in the lake.