The towers were built on the site of a former horse racing track, necessitating an extensive site excavation to reach solid rock.
The skybridge is not bolted to the main towers but is designed to slide in and out of the buildings to prevent it from breaking during high-wind oscillations.
The buildings utilize a 'tube' structural system, which creates an efficient use of floor space while maintaining high wind resistance.
Due to the soil conditions, the foundation consists of a 4.5-meter-thick concrete raft containing 13,200 cubic meters of concrete per tower.
The exterior facade features 33,000 stainless steel and 55,000 glass panels to manage the tropical heat and sunlight.
Each tower weighs approximately 300,000 tonnes, which is equivalent to the weight of 42,857 elephants.
The Petronas Twin Towers are 451.9-meter-tall postmodern skyscrapers that held the title of the world's tallest buildings from 1998 to 2004. The 88-floor structures are linked by a two-story skybridge on the 41st and 42nd levels, which serves as a fire escape and structural connector. Designed by architect César Pelli, the floor plan is based on an eight-pointed star, reflecting traditional Islamic geometric patterns. The towers are constructed primarily of reinforced concrete with steel and glass facades. The interior incorporates stainless steel and aluminum motifs to mirror Malaysian handicraft designs. The foundation reaches depths of 120 meters, making it one of the deepest concrete foundations in the world. The towers house the headquarters of Petronas and various international corporations, alongside public observation decks and the Suria KLCC shopping mall at the base. The structures remain the tallest twin towers in the world as of 2026.
The elevated vantage point at the center of the KLCC Park provides a direct, symmetrical view of both towers.
Book tickets well in advance online as the limited daily capacity for the skybridge and observation deck fills up quickly.
Carry a light jacket, as the air-conditioning inside the towers and the observation levels can be quite cold.
Bring a wide-angle lens or a phone with a panoramic mode to capture the height of the towers from the base.
Do not attempt to walk to the towers from distant areas during midday as the tropical humidity is extreme; rely on local taxi or ride-hailing services.
Closed every Monday and during specific public holidays in Malaysia.
Modest attire is recommended as a sign of respect; avoid sleeveless tops or very short skirts.
