What is the Worlds largest building made out of mud?

The world's largest building made out of mud is the Great Mosque of Djenné, located in Djenné, Mali. This architectural marvel, originally constructed in the 13th century and rebuilt in 1907, is a prominent example of Sudano-Sahelian architecture. The mosque is made from sun-baked earth bricks and features impressive minarets and a distinctive façade, showcasing traditional building techniques and cultural heritage. It is also a UNESCO World Heritage Site, reflecting its historical and architectural significance.