The Grand Mosque of Mecca tops the list of the most expensive buildings on Earth built at a cost of $100 Billion.
■ Size: One million (1,000,000) square meters Capacity:
■ Can accommodate 3 million people
■ Receives twenty (20) million visitors annually
■ Open (24) hours.It has never been completely closed in over 1400 years
■Has 1800 cleaners, 40 electric sanitary cleaning cars, 60 electric sanitary machines to clean open courtyards.
■ Has 13000 Sanitary toilets spread throughout the premises.
■ Floor covered with 40,000 carpets (longer than 79km)
■ 25,000 water dispensers (one of the largest water dispensing systems in the world)
■ 15,000 Giant Air conditioning units (for cooling) are scattered inside the Mosque.
■ The floor of the Mosque reflects light and heat thus improving the regulation of heat in the premises.
■ The sound system in the Grand Mosque is one of the largest and most complex sound systems in the world with 6000 speakers operated by Fifty (50) sound engineering personnel.
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