Djenne-Djenno (aka Djenné-Jeno, Jenne-Jeno, or Old Jenne) was an ancient city located in modern Mali, West Africa which flourished between c. 250 BCE - 1100 CE, making it one of the oldest cities in Sub-Saharan Africa. Prospering thanks to fertile agricultural land and as a hub of regional trade, the city boasted a population of around 20,000 at its peak. Djenne-Djenno, along with its medieval namesake city nearby, has been listed as a UNESCO World Heritage Site since 1988 CE.

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