A rare kind of blue bear can be found chiefly in the national park that shares their name.

The "Gateway to the Arctic" connects Barrow's indigenous population with the sea and its traditional industry: whaling.

North America's first frozen mummified remains of an ice age steppe bison, the 36,000 year-old mummy named "Blue Babe."

Massive mounds of golden sand look like a desert landscape randomly plopped in an Arctic forest.

This ghostly Alaska village still clings to a steep cliffside despite having been abandoned for over 50 years.

The ghostly remains of what was once the world's richest copper mine.

The king of U.S. high points towers over every other peak on the continent.

This whimsical stacked cabin looks like something out of a children's book.

Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

An impressive century-old, to-scale topographical map of Guatemala.

A ruined Maya city that suffered a years-long case of mistaken identity.

A magical sinkhole on the Yucatán Peninsula is adorned with mini waterfalls and hanging vines.

Extraordinary sculpture garden created by an eccentric English poet.

This abandoned mansion has a window for every day of the year, and is a temple for ghost hunters.

Mysterious painted skulls in Moravia.

A spiral staircase twists to the top of this unusual Czech lookout tower.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Thirty creepy ghosts now inhabit this decaying 14th-century church.

Two monstrous faces loom over a village in Czechia.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

The hidden lair of an alchemist rediscovered in a 2002 flood.

Walk through Czech history in Prague's largest graveyard.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Countless grotesque faces stare out from this eerie Prague art wall.