Soaring 88 stories high into the Kuala Lumpur's skyline, the Petronas Twin Towers were designed by Argentine architect Cesar Pelli in a distinctive postmodern style. With modern takes on Islamic art, the design is a reflection of Malaysia's Muslim heritage. Planning for the Petronas Towers included rigorous tests and simulations of wind and structural loads to withstand earthquakes, typhoons and tsunamis. The buildings house offices as well as the Petronic Phllharmonic Hall, and art gallery and a discovery center. It opened to the public in 1999 and has become the most recognized symbol of Kuala Lampur.