Visit the Petronas Twin Towers is one of the most amazing experiences in my life... is just incredible stay under this Mounsters of the Architecture, and try to find the end of this buildings in the middle of the sky...but more impresive and amazing, it is to discover that the Petronas Towers was the creation of the one Argentinean Architect...César Pelli. 
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Designed by Argentine-American architect César Pelli, the Petronas Towers were completed in 1998 after a seven year build and became the tallest buildings in the world on the date of completion 
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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.
Another Islamic influence on the design is that the cross-section of the towers is based on a Rub el Hizb (albeit with circular sectors added to meet office space requirements
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Due to a lack of steel and the huge cost of importing steel, the towers were constructed on a cheaper radical design of super high-strength reinforced concrete. High-strength concrete is a material familiar to Asian contractors and twice as effective as steel in sway reduction; however, it makes the building twice as heavy on its foundation than a comparable steel building. Supported by 23-by-23 meter concrete cores and an outer ring of widely-spaced super columns, the towers use a sophisticated structural system that accommodates its slender profile and provides 560,000 square metres of column-free office space. Below the twin towers is Suria KLCC, a shopping mall, and Dewan Filharmonik Petronas, the home of the Malaysian Philharmonic Orchestra.
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The Petronas Twin Towers, in Kuala Lumpur, Malaysia, were the world´s tallest buildings, before being surpassed by Taipei 101