Some works in the Tate collection are part of the fabric of Tate gallery buildings.1 of 5 Patrick Heron Window for Tate Gallery St Ives 1992-93, part of the Tate St Ives buildingErvin Bossanyi The Angel Blesses the Women Washing Clothes 1938-43 at Tate BritainPhoto © Sam DrakeRex Whistler The Expedition in Pursuit of Rare Meats 1926–7 at the Rex Whistler Restaurant, Tate BritainBoris Anrep Mosaic Pavement in Gallery II 1923 at Tate Britain© TateMichael Craig-Martin in collaboration with Herzog & de Meuron Swiss Light 1999 at Tate ModernWindow for Tate Gallery St Ives The Angel Blesses the Women Washing Clothes The Expedition in Pursuit of Rare Meats Mosaic Pavement in Gallery II Swiss Light