The map pin for this entry marks the Great Mosque on Kilwa Kisiwani, not a generic monument called “Great Mosque.” The ruin belongs to a wider historic settlement on an island off Tanzania’s southern coast, about 300 kilometres south of Dar es Salaam. Kilwa Kisiwani and nearby Songo Mnara together form a UNESCO World Heritage property, recognised for the evidence they preserve of Swahili urban life, Islamic culture and Indian Ocean commerce.
Kilwa was occupied from roughly the ninth to the nineteenth century and became especially prosperous in the thirteenth and fourteenth centuries. Its merchants took part in networks connecting the East African coast with Arabia, India and China. Gold and ivory from the mainland hinterland moved through these ports; imported goods included silver, pearls, perfumes, Persian ceramics and Chinese porcelain. UNESCO describes Kilwa as one of the region’s most important medieval ports, while the archaeological remains show a complex town rather than a temporary trading camp.