Giant kites are flown during this Day of the Dead celebration in Guatemala.

One of its engravings is believed to be among the first representations of medical and surgical instruments.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

As the Dead Sea continues to deplete, massive sinkholes open along its banks.

A "miracle" that seems to produce more holy fistfights than holy revelations.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

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

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

Ancient human remains unearthed around the iconic monument.

The first archaeological site discovered by aerial photography.

The turquoise-studded skull of a long-dead Aztec man sits within Mexico City’s Museum of Anthropology.

The striking jade death mask of an ancient Maya king is displayed in a replica tomb in Mexico City.

The most complete statue of this Aztec god sits a top a throne carved with images of hallucinogenic plants.

This colossal ancient sculpture of the monstrous Aztec rain god has a literally stormy history.

This strange sculpture of a menacing skull surrounded by sun rays was discovered at the foot of the Pyramid of the Sun.

The only castle in North America to ever house European sovereigns.

A jaw-dropping "megalibrary" that turns book-browsing into a geometric adventure.

This parking garage was the site of what was - at the time - the largest cash robbery in history.

This landmark cemetery in Boston was created more than 300 years ago.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

Two thousand artifacts from around the world collected by one woman who loved to travel.

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