’ His early work was predominantly in fairly lightweight materials, including wood and mixed media, and was often brightly coloured, but in the late 1980s he changed direction. Having acquired a large ground-floor studio where he could handle heavy materials, he turned to working in stone. Typically his sculptures from this time have consisted of large, rough-hewn blocks; he has also made smooth, organic pieces in polished metal. Kapoor was Britain's representative at the Venice Biennale in 1990 and in 1991 he was awarded the Turner Prize. He has carried out numerous public commissions, often working on a very large scale, as with Cloud Gate (2004, Millennium Park, Chicago), an enormous curved structure made of polished stainless steel plates that reflect their surroundings like a distorting funfair mirror.