The mosque in the island bound Mali town of Djenn seduces travelers with the mud brick hue of its fortress like exterior and the large supporting cast of wooden beams that protrude through the walls into the brilliance of the African sun. So captivating is this earthen marvel, the worlds largest mud brick structure, that itll make little difference to your experience to learn that the current building only dates from 1907. It was modeled on the Grande Mosqu e erected on the same site in 1280; the original building fell into ruin in the 19th century.