A marvel of Byzantine engineering under the streets of Istanbul.

No one is sure if the world's fourth-largest diamond had been found in a rubbish heap or was pawned by Napoleon's mom.

1513 Turkish world map, full of European state secrets and snarky commentary.

Inside the Wayne County airport is an amazing collection of lights and sounds.

This bridge is embedded with a giant steel dragon that breathes fire from its mouth.

Home of the unusual art of water puppetry, one of Vietnam's oldest curiosities.

The notorious "Hanoi Hilton" where Vietnamese colonial subjects and later American POWs, including John McCain, were imprisoned.

Twice a day a speeding train passes only inches from the homes of this residential neighborhood.