Sheffield Winter Gardens, Sheffield, Yorkshire, England. Construction method Glulam (glue laminate) using sustainable larch which requires little further protection after the steaming, shaping and lamination process. Architects: Pringle Richards Sharratt; Structural Engineer: Buro Happold. Built as part of the "Heart of the City"' regeneration programme. Opened by Elizabeth II in May 2003. Houses 2,500 plants from around the globe. View On Black