Chang'an Becomes the World's Largest, Most Cosmopolitan City
Persians, Sogdians, Japanese, and Nestorian Christians all live inside the Tang capital's walls
Quick facts
- City
- Chang'an (modern Xi'an), Tang capital
- Period
- Mid-8th century CE
- Religions present
- Buddhism, Nestorian Christianity, Zoroastrianism, Islam
- Status
- Widely regarded as the largest city in the world at the time
What happened
At the height of Tang power in the mid-eighth century, the imperial capital Chang'an, on the modern site of Xi'an, was the eastern terminus of the Silk Road and, by most estimates, the largest city in the world, with a population reaching into the hundreds of thousands within its walls and close to two million counting its wards and surrounding countryside. Merchants, monks, students, and envoys from Persia, Central Asia, Japan, Korea, Vietnam, Tibet, and India traveled the road specifically to reach it, and many settled permanently, bringing with them Buddhism, Nestorian Christianity, Zoroastrianism, and eventually Islam, all practiced openly within the same metropolis. The University of Washington's Silk Road Seattle project describes Chang'an as the network's emblematic city, one whose extraordinary wealth and cultural mixing were themselves products of the trade the city anchored.
Why it matters
Chang'an is the clearest single demonstration that the Silk Road moved more than goods: an entire cosmopolitan urban culture, with foreign residential quarters, foreign religions practiced in dedicated temples, and foreign fashions adopted by the Chinese elite, grew directly out of a city's position at one end of the trade network.
How we know
The University of Washington's Silk Road Seattle project's essay on Chang'an describes the city's population, foreign communities, and religious diversity based on Tang-era administrative and literary records alongside archaeological finds from the city's ruins.
Sources
- Silk Road Seattle, University of Washington. Chang'an (Xian) · Reputable sourcedepts.washington.edu · The domain "depts.washington.edu" is on our Reputable source registry. · Link is live and its text matches the event's key terms (Jul 2026)
- World History Encyclopedia. Chang'an · Reputable sourceworldhistory.org · The domain "worldhistory.org" is on our Reputable source registry. · Link is live and its text matches the event's key terms (Jul 2026)
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