There is a palm tree post on each side of the entrance gate to the mosque enclosure.[12] The unusual mud brick building covers an area of 400 square metres (4,300 sq ft) and is roofed by 21 conical domes made of mud brick and limestone. Each dome has small openings so that light can enter the building.[1] The domes also serve to keep the interior cool, providing a form of natural air conditioning.[10]