Djenné (also Dienné or Jenne) is a city on the Bani River in southern Mali with a population of about 12,000 (in 1987). It is famous for its mud brick architecture, most notably the Great Mosque of Djenné, rebuilt in 1907. In the past, Djenné was a centre of trade and learning, and has been conquered a number of times since its founding. Its historic city center was designated a World Heritage Site by UNESCO in 1987.

Source: Wikipedia