Work is under way on the Great Glasshouse for the National Botanic Garden of Wales by Foster and Partners with Anthony Hunt Associates. The geometry of the house has been described by Nigel Curry, project architect, as similar to a 'slice of a giant doughnut'. Built on the side of a small hill in the Towey valley, the structure consists of a large dome formed by tubular steel arches tilted to continue the contours of the top of the hill. The whole of the glass house leans towards the south to maximise solar gain and reduce exposure to the cold north-easterly winds. For further information contact British Steel Tubes & Pipes on 01536 404 121.