Bahrain's Al Fateh Grand Mosque is one of the largest in the world, encompassing 6,500 square metres with capacity for over 7,000 worshippers. BFG designed and fabricated the mosque's signature 26 metre diameter composite dome, weighing approximately 30 tonnes -- a fraction of the 150 tonne concrete alternative -- eliminating the need for heavy foundations. The dome was fabricated in 24 external segments with insulation, fixed to a lightweight aluminium space frame. BFG achieved a simulated cement texture on the dome segments, perfectly matching the matt, sandy exterior of the main building. Three decades later, it remains in pristine condition despite its coastal location.