Standing at 607m tall, the Makkah Royal Clock Tower is the largest clock tower, and third largest building in the world, with only the Shanghai Tower (632m) and the Burj Khalifa (828m) ahead of it.
Designed by architects’ SL Rach and Dar al-Handasah Shair & Partners, at a cost of over $15billion the clock tower is at the heart of the holiest Islamic city, Makkah, and was developed as part of the King Abdulaziz Endowment Project.
At 120 floors, the building provides luxury accommodation and leisure facilities for devout Muslims that make the journey to the city every year during the Hajj.
The clock faces, which are 35 times larger than Big Ben, are a feat of modern engineering. At 43m across and are decorated with over 98 million coloured glass mosaic tiles each clock hand weighs a staggering 6 tonnes. To turn the 23m hands, a clock drive needed specially commissioning to cope with the extreme weight and punishing weather conditions the clock face would encounter at that height.