Why is the city of djenne djeno famous?

The city of Djenné-Djenno is famous for being one of the oldest urban centres in sub-Saharan Africa. It was founded around 250 BC and reached its peak between 1000 and 1250 AD. The city was located in the Inland Niger Delta region of Mali and was a major centre of trade and commerce. It was also a centre of Islamic scholarship and learning, and was home to a number of important mosques and madrasas. The city was abandoned around 1400 AD, but the ruins of the city walls and other structures can still be seen today. Djenné-Djenno is a UNESCO World Heritage Site and is considered to be one of the most important archaeological sites in Africa.