Petronas Twin Towers were the highest buildings of the world jusqu' in Taipei 101 was completed in 2004, as measured at the beginning of their structural components (arrows, but not antennas) . Whorls are regarded as forming integral part of the architectural design of the buildings, in which variations to modify l' appreciably; appearance and design of the building, whereas the antennas May being added or withdrawn without such consequences. Petronas Twin Towers remain higher towers twins in the world . The Tower of Willis and the turns of the World Trade Center each one were built with 110 occupied stages - 22 more than 88 stages, l' Petronas Twin Towers '.
The Tower of Willis and the roofs of the World Trade Center and highest occupied stages largely exceeded the height of the roof and the last stages of the Petronas twin towers. L' antenna of the highest tower of Willis is of 75 m (246 pi) moreover than the arrows of the Petronas twin towers. However, in accordance with CTBUH payments and of directives, the antennas of the Tower Willis n' were not counted like belonging to its architectural characteristics.  The arrows on the Petronas lathes are included in the height, because they are not the masts d' antenna. Consequently, Petronas Twin Towers to exceed the official size of the Willis Tower of 10 m, but the Willis Tower has several stages and of the sequences much squarer.

Conceived by Argentinian architect César Pelli, the Petronas Turns were completed in 1998 after one year, seven to build and became highest buildings of the world at the date d' completion.  They were built on the site of the track of races of Kuala Lumpur.  Because the depth of the rock, the buildings were built on the deepest foundations of the world.  The 120-meters of the foundations were built in the 12 months by Solétanche Bachy, and require d' enormous quantities of concrete .
The 88 turns of word are mainly built of reinforced concrete, with a steel and a frontage out of glass designed to resemble reasons in l' Islamic art, a reflection of the Islamic religion of Malaysia. Another Islamic influence on the design is that the cross section of Towers is based on Rub El Hizb (though with circular sectors added to satisfy the requirements in space for office).
Turn 1 was built by a Japanese consortium directed by the Company Hazama any Tower 2 was built by Samsung C & T and Kukdong Engineering & Construction, South Korean contractor.