Megastructure bigger than SIX Big Bens with world's largest clock is 4th tallest building on Earth...but you won’t know it

IN THE heart of the Middle East lies a megastruture that’s bigger than six Big Ben’s and boasts the world’s largest clock. The Makkah Royal Clock Tower stands at a colossal 1,972ft tall and is the tallest building in Saudi Arabia – and the fourth-tallest in the world. 12 An aerial view of the Mecca Royal Clock Tower, in the holy city of Mecca Credit: AFP 12 The structure is located just 300 metres away from Islam’s most sacred site, the Great Mosque of Mecca Credit: AFP 12 The tower stands at a colossal 1,972ft tall Credit: Getty 12 The…