Petronas Twin Towers - KUALA LUMPUR, MALAYSIA

Petronas Twin Towers are the tallest twin towers in the world, and its status has remained unchallenged since 1996. The buildings are a landmark of Kuala Lumpur.

The Petronas Towers' structural system is a tube in tube design, invented by Fazlur Rahman Khan, while they were designed by Argentine architect Cesar Pelli.

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.