Sahelian architecture refers to the traditional building styles found in the Sahel region of Africa, which stretches from the Atlantic Ocean to the Red Sea. This architecture is characterized by the use of local materials such as mud, clay, and straw, allowing structures to blend harmoniously with the environment. The buildings often feature thick walls to provide insulation against the extreme heat and cold of the region. A notable example of Sahelian architecture is the Great Mosque of Djenné in Mali, which is made entirely of mud and is one of the largest mud-brick buildings in the world. The design typically includes flat roofs, decorative elements, and tall, narrow windows to enhance ventilation. This style reflects the cultural and climatic adaptations of the Sahelian people.