It is planned to be the world's first 1 km (3,281 ft) high building and the centrepiece and first phase of a development and tourist attraction known as Jeddah Economic City. The building will be 568 feet taller than the world’s current tallest building, Dubai’s 2,722-foot-tall Burj Khalifa.
Initial plans called for a mile high structure, but the geology of the area proved unsuitable for a tower of that height. The current design, created by American architect Adrian Smith, who also designed Burj Khalifa, incorporates many unique structural and aesthetic features. The creator and leader of the project is Saudi Arabian prince Al-Waleed bin Talal a grandson of Ibn Saud, and nephew of the Kings of Saudi Arabia before him. Al-Waleed is the chairman of Kingdom Holding Company (KHC), which is a partner in the Jeddah Economic Company (JEC), which was formed in 2009 for the development of Jeddah Tower and City.
Jeddah Tower's 50-hectare (120-acre) plot with surrounding buildings will be the first of a three phase Jeddah Economic City development. The three phase project proposed for a large area of undeveloped waterfront land with an area of 5.2 km2 (2.0 sq mi). It was originally planned to cover 23 km2 (8.9 sq mi) and cost SR100 billion. The area is located roughly 20 km (12 mi) north of the port city of Jeddah. Jeddah Economic City was designed by HOK Architects and is estimated to cost at least SR75 billion (US$20 billion) and take around ten years to build.
Inside Kingdom Tower, also known as Jeddah Tower will house a Four Seasons hotel, Four Seasons-serviced apartments, office space, luxury condominiums, and what is expected to be the world’s highest observatory. The complex will have 59 elevators, which includes 54 single-deck and five double-deck elevators, and 12 escalators. At level 157, you'll find a sky terrace that's nearly 98 feet in diameter.