Renowned for its Great Mosque, the largest earth-built structure in the world, Djenné offers far more. Build on a small island in the Niger Inland Delta the area has been cultivated since at least 200 BC. While the current town "only" dates back to the 14th century, it's one of the most memorable destinations in Mali. The entire town is built by mud and traditional banco mud houses, two stories high, line the narrow streets. International efforts to stop inhabitants from switching to concrete and other modern building materials have saved the town. A museum, an artisans' house and a library of ancient manuscripts are the most interesting sights beside the mosque. The mosque itself is breathtaking. Rising 18,5 metres above the plateau it's built on, everything is made of mud. Even the roof and the pillars holding it. Non-Muslims are formally forbidden to enter, but the caretaker will openly offer to ignore this rule, should a visitor make the right donation. As the ban is due to historical, rather than religious reasons, we won't judge anyone who accepts the offer.