Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

Thousands of abandoned statues of deities are taken to this hillside in southern Hong Kong.

An ancient instrument used to measure the waters of the Nile so Egyptian farmers would know whether to expect famine or flood.

A silly medieval mural preserved on the side of a Viennese house.

The abandoned mine where American troops discovered a treasure trove of art and artifacts hidden by the Nazis.

A perilous medieval road leading right into the sea.

A Himalayan monastery claims to have a piece of a centuries-old abominable snowman.

The Arctic Circle runs through this isolated spot north of Iceland.

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

The abandoned "Red Star Train Graveyard" is the final rusting place for precious artifacts of train history.

More than 300,000 historical artifacts from the famous music venue, from Duke Ellington's handwritten score to The Beatles' booking slip.

The rest of him lived another 61 years and was buried elsewhere.

Lima’s Museum of Anthropology is lined with thousands of elongated human craniums.

Plundered and left asunder by grave robbers, this ancient necropolis has been painstakingly pieced back together.

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

Eight naturally mummified bodies in glass coffins are housed in an underground crypt.

Naturally preserved bodies are eerily staged throughout the crypt in varying poses.

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.

The enchanting archway is the only surviving portal into Dublin's lost medieval wall.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

The metal leaves on this tree are engraved with the names of Holocaust victims.

A forgotten graveyard lost in the tangles of an overgrown garden.