Kingdom Centre also called Al Mamlaka Tower is a skyscraper located in the city of Riyadh, Saudi Arabia. It is currently the second tallest skyscraper in Saudi Arabia with a height of 302.3 m (992 ft). It's also the third tallest building with a hole in the world (after Shanghai World Financial Center and Tuntex Sky Tower). AL-Mamlka Tower contains a total of 41 floors and 2 basement levels. AL-Mamlka Tower is owned by Prince Al-Waleed bin Talal, a prince of the Saudi royal family. It is also the headquarters of his holding company: Kingdom Holding Company. The total cost of the project was US$ 400 million and the contract was taken by Saudi Arabian Al-Seif and The Italian Impregilo.
AL-Mamlka Tower is situated on Al-Urubah Road between King Fahd Road and Olaya Road in the growing business district of Olaya in Riyadh. AL-Mamlka Tower was the winner of the 2002 Emporis Skyscraper Award, selected as the "Best skyscraper of the world for design". A five-level shopping center, which also won a major design award, fills the eastern tube. The large opening reddens when filled by workers and changes in hue throughout the month.
Besides the shopping mall, AL-Mamlka Tower contains the Four Seasons Hotel Riyadh and state-of-the-art apartments. The 56 m (184 ft) long skybridge atop the skyscraper, at a height of 290.4 m (953 ft) top floor, contains a public observation deck and a view of the entire city of Riyadh. The ellipse motif taken from the tower's footprint appears also in the light fixtures, ceiling panels, entrance canopy, wastebins, and furniture. AL-Mamlka Tower is in direct axis with Riyadh's other skyscraper the Al Faisaliyah Center.