A wild west land agreement was etched right onto this historic Idaho stone.

Largest necropolis in the Mediterranean.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

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