Located in the heart of the desert, Burj Khalifa has one of the most advanced cooling systems in the world.  The water collected from air conditions of Burj Khalifa is said to be equal to 20 Olympic-sized swimming pools per year. The water is then recycled and used for landscaping. 2

The Makkah Clock Royal Tower will be the biggest clock tower in the world and the second tallest building in the world. The clock tower itself will be used for the call to prayer within the city of Makkah or Mecca.

Even though there are 61 elevators inside the tower, French climber Alain Robert  (aka French Spider Man) decided to climb Taipei 101 legally on Christmas Day in 2004.

When architects decided to change the design of the Shanghai World Financial Center it resulted in an extra bill of $200 million due to the advanced designs which included a structural system re-design, a foundation re-design and increased safety features.

The height of the International Commerce Centre was scaled back from earlier plans because authorities didn’t allow buildings to be taller than mountains surround Hong Kong.

Petronas Twin Towers were the tallest buildings in the world until 2004 but they are still  the tallest twin buildings in the world. It cost US $1.2 billion to build Petronas Towers.

Wisma 46, also known as The Fountain Pen building because of its unique shape. One of the most interesting facts about the building is that it has been featured in the “Need for Speed: Underground 2” movie.

source: saudi.lamudi.com