The Petronas Twin Towers, also known as the Petronas Towers are twin towers. With a height of 451.9 meters, they are the the tallest twin towers in the world, and were the tallest buildings in the world upon its completion in 1998, beating the Willis Tower because of its decorative spires; however they weren't the tallest in the world by pinnacle height, as the North Tower of the World Trade Center had a pinnacle height of 526.8 meters because of its tall antenna mast, and the Willis Tower was the second by pinnacle height with 442.3 meters, until 2000, on which the antennas of the Willis Tower had extended in height causing the Willis tower to increase its size to 527 meters, beating the North Tower. The Petronas Towers officially became the tallest twin towers in the world by both pinnacle and official height after the WTC was destroyed in the September 11 attacks, in 2001. The Petronas Towers were beaten in spire height by Taipei 101 in 2004.

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