The Petronas Twin Towers at Kuala Lumpur City Centre represent a tremendous achievement in structural engineering design. The slender towers soar 452 meters (1,483 feet) above Kuala Lumpur and culminate in gleaming stainless-steel pinnacles. Their dramatic Islamic-themed design is enhanced by a sky bridge at floors 41 and 42 that connects the towers and creates a visual gateway to a major public park. The sky bridge was designed with slender structural members rather than heavy trusses to be compatible with the architecture of the buildings and was constructed more than 150 meters above street level. It accommodates independent movement of the towers as they sway due to wind loads. The KLCC complex also includes a 5,143-car underground garage, a seven-story retail facility and an acoustically isolated 864-seat concert hall that spans over the entryway to the towers and retail areas.