Silk Road

These boulders bear testimony to thousands of years of cultural exchange along this trading route.

This famed Silk Road oasis was one of the largest cities in the world before it was destroyed by a Mongol horde.

The remains of a medieval city loom in one of the most isolated desert regions of Turkmenistan.

Witness traditional silk production in the Uzbek city that's been a hub of sericulture for over a thousand years.

One of the largest and oldest caravansaries in Persia.

The remains of an ancient city-state along the Silk Road.

This ancient Silk Road outpost overlooking the Wakhan Valley is miraculously still standing.

The last standing example of an ancient district's teatime tradition.

The oldest still-inhabited hill fort in India looks like a magnificent golden sandcastle.

This architecturally eclectic fortress witnessed centuries of bloody turmoil, including the massacre of its ruling clan.

This ancient city—home to nine civilizations—is soon to be buried under 200 feet of water.