History of the world's tallest buildings
The buildings that were the tallest secular skyscrapers, which excludes religious buildings, were:
The list of tallest buildings is based on the default metric of the Council on Tall Buildings and Urban Habitat (CTBUH), that of measuring to the highest architectural element. Other criteria would generate a different list. Shanghai World Financial Center is not on the above list, but it surpassed Taipei 101 in 2008 to become the building with the highest occupied floor. Using the criteria of highest tip (including antennae), the World Trade Center in New York City was the world's tallest building from 1972 to 2000, until the Sears Tower in Chicago (which already had a higher occupied floor than the World Trade Center) had its antenna extended to give that building the world's tallest tip; a title it held until the 2010 completion of Burj Khalifa. Petronas Towers and Taipei 101 were never the world's tallest buildings by the highest–tip criteria.
Jeddah
This proposed tower, formerly known as the Kingdom Tower, is being built in Jeddah by Prince Al-Waleed bin Talal and will stand tall. Upon its completion, it will be the tallest skyscraper in the world. The building has been scaled down from its initial proposal, since the ground proved unsuitable for a building that tall, to a height of at least (the exact height is being kept private while in development, similar to the Burj Khalifa), which, at about one kilometre (), would still make it by far the tallest building or structure in the world to date, standing at least taller than the Burj Khalifa in Dubai. Construction began in April 2013 and is scheduled for completion in 2019.