Exterior Redesign

The Petronas Towers, also known as the Petronas Twin Towers, are twin skyscrapers in Kuala Lumpur, Malaysia. Malaysia is known all over the world for their signature iconic standard in skyscraper history.

KLCC Holdings Sdn Bhd
Thornton Tomasetti, Cesar Pelli
Commercial Structure

Petronas Towers, Malaysia

What used to be the world’s tallest towers may have been overthrown by other super skyscrapers since 2004 but the Petronas Towers still stand as the tallest twins in the sky. They form the central element of the Kuala Lumpur City Centre, Malaysia and are known all over the world for their signature iconic standard in skyscraper history. The plan of the towers is generated from two overlapping squares that form an octagonal star, a pattern frequently found in Islamic design.

As the buildings rise, they step back six times, and at each setback, the walls tip outward slightly, adding complexity reminiscent of traditional Malaysian architecture. The towers are clad in panels of glass and stainless steel that softly reflect sunlight, typical of any soaring tower. Between the two towers is a powerful, figural void. To activate this space, the center of the composition, a two-story bridge was added at the 41st and 42nd floors. Two stories. One has got to appreciates the strides in engineering made in this design. The bridge is structured by angled brackets that shape the space and accentuate the vertical thrust of the towers. This sky lobby connects the buildings and contains spaces shared by both, including elevator lobbies, a conference center, and a prayer room.


The Twin Towers, built to house the headquarters of Petronas, the national petroleum company of Malaysia, were designed by the Argentine-born American architect Cesar Pelli; they were completed in 1998. Petroliam Nasional Berhad is a Malaysian oil and gas company that was founded on August 1974.


Applying a tube-structure for extreme tall buildings is a common phenomenon. The 88-floor towers are constructed largely of reinforced concrete, with a steel and glass facade designed to resemble motifs found in Islamic art, a reflection of Malaysia’s Muslim religion.