Petronas Towers in KL

At 1483 feet (452m) tall, the tallest building in the world at the date of its completion, measured to the highest point. However, the Sears Tower in Chicago still has the highest occupied building floor, more than 200 feet higher than the highest occupied floor of the Petronas Towers.
Each of the twin Petronas Towers is 88 stories plus an additional architectural point (at 1242 feet), plus a tall spire to 1483 feet. Compare to the Sears Tower in Chicago which is 110 stories, and the twin World Trade Center towers in New York, which were each 110 stories. Although these other skyscrapers were created with higher occupied floors, they are not considered as tall under the arcane rules used for rating the world's tallest, according to which architectural spires count towards building height, but antennas atop a building do not.
Petronas Towers in KL
Originally uploaded by Tommy Perkins.