
The oldest surviving mosque in the Sahara Desert at the ancient oasis of Awjila, linked to 7th-century Islamic history and preserving a 12th-century architectural structure of 400 square meters built from sun-dried mudbrick, limestone and date-palm trunks, crowned by more than 20 conical mudbrick domes with natural cooling apertures.
Photo: Munsha'at al Akhdar lil Alwan, Benghazi., Public domain, Wikimedia Commons