Final answer:
The Great Mosque of Djenné is known for being one of the wonders of Africa, the largest mud-built structure in the world, and a unique religious building.
Step-by-step explanation:
The Great Mosque of Djenné is known for being all of the above: 1) It is considered one of the wonders of Africa, 2) It is the largest mud-built structure in the world, and 3) It is a unique religious building.
The Great Mosque was originally built in the thirteenth and fourteenth centuries and continues to serve as a center of religious learning and scholarship to this day. It has been rebuilt multiple times and is made entirely of mud, which is replenished each year due to the rainy season erosion.
The mosque holds great significance in Djenné's Islamic heritage and is an important UNESCO World Heritage site.