Cold storage for agricultural biodiversity.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A magical place that lets you play in and explore the world of Studio Ghibli.

A house built specifically to shelter the dead.

These Honduran caves earned their magical nickname thanks to reflective bone deposits.

A full-size replica of this well-preserved temple lets you take a walk through the Mayan age.

This staircase full of Mayan hieroglyphics is perhaps the largest single text in the world.

Norway's oldest cathedral still in use.

This abandoned mining village was predicted to resist decay longer than any other modern human settlement.

In the northernmost city in the world, it's illegal to be buried because it’s too cold for bodies to decompose.

An artist's mausoleum with a haunting echo.

The burning of this 12th-century church kicked off a campaign of Norwegian Black Metal terror.

A stunning silver lining to global warming's gloomy cloud.

An intricately carved Viking church overlooks a glistening fjord.

A quick and simple solution to Cambodia's train woes.

Take a hidden path to the mouth of the cave to watch millions of bats swarm at sunset.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

Sip coffee and talk politics at this landmark cafe in Astoria's Little Egypt, a contender for the title of America's first hookah bar.

The site of the first battle of World War II.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

Countless stories attempt to explain Poland's mysterious J-shaped trees.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

Originally built in 1869, this castle is currently part of Felician University's campus.