The Hassan II Mosque located in Casablanca is the largest Mosque in Morocco and the fifth largest Mosque in the world after the Masjid al-Haram (Grand Mosque) of Mecca and the Al-Masjid al-Nabawi (Prophet's Mosque) in Medina. Designed by the French architect Michel Pinseau and built by Bouygues.It stands on a promontory looking out to the Atlantic, which can be seen through a gigantic glass floor with room for 25,000 worshippers. A further 80,000 can be accommodated in the mosque's adjoining grounds for a total of 105,000 worshippers present at any given time at the Hassan II mosque. Its minaret is the world's tallest at 210 m (689 ft)