Go inside to really appreciate this 500-year-old technological masterpiece.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

The marble facade hides a little-known medical museum with early surgical instruments and rare copies of canonical texts.

100 year tradition of fist fights, marked by marble footsteps.

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

Ancient snack bar of the Roman Empire re-opened.

Erotic art covers the walls of the largest ancient pleasure palace.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Stone Age solar temple is aligned with the sun on each equinox and solstice.

Hoax, mistake, or evidence of dinosaurs in human times?

A battle between nature and architecture in the Cambodian jungle.

Khmer Rouge's high security prison.

5,000 skulls in memorial to those killed by the Khmer Rouge.

Artifacts and memories from the Vietnam war, located in a place that experienced it first hand.

An extravagant monument to an extravagantly unpopular Emperor.

Vietnam's feral abandoned water park offers access to a post-apocalyptic funscape, now with fewer crocodiles.

Ha Long Bay's "Cave of Surprises" houses a popular phallic rock formation.