The U.K.'s tallest sculpture—at 114.5 meters—reached structural completion on Oct. 28, when crews placed the top section of steel-tube diagrid. Designed as a permanent observation platform over London's emerging Olympic Park, the tower contains some 2,000 tonnes of steelwork. It was designed by local artist Anish Kapoor, along with structural engineer Cecil Balmond, former chairman of Arup Group Ltd., London. Steelcraft Erection Services Ltd., Dalton, is building the ArcelorMittal Orbit tower with tubular modules fabricated by the company's affiliate Watson Steel Structures Ltd., Bolton. The tower is set to be handed over to the Olympic Park Legacy Co. next May, ahead of the July 2012 start of the summer Olympic Games.