the mosque in the village of larabanga, ghana. there's some differing theories over when exactly the mosque was built and by who, but it's thought to date back to 1421. this makes it the oldest in west africa.
one common story of its founding goes that it was built by a muslim trader named ayuba, who had a dream instructing him to build a mosque. when he awoke, he found the foundations were already laid, and he built the rest. his remains are thought to be buried under the baobab tree nearby.
the mosque is built in the sudanese architecture style, one of a few similar styles associated with grassland regions in west africa south of the sahara desert. the wood jutting out of the walls are support beams.