A fountain standing as a testament to a doomed alliance.

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.

This "tower of death" has acted as an observatory, a religious hub, and an executioner's lair.

Ancient barriers wrap around what was once an important stop along the Silk Road.

Traditional architecture and ancient irrigation systems are on display in this gorgeous mountain village.

Where artisans use centuries-old techniques to build traditional Arabian ships.

A sinkhole and now a swimming hole, too, full of dazzling turquoise water.

This bazaar is one of the oldest in the Arabian world.

This spectacular mosque houses the second-largest chandelier in the world.

This beautifully restored fortification kept the city safe for centuries.