The roof is constructed of a series of precast concrete "shells". The roofs of the Sydney Opera House are covered in a subtle chevron pattern with 1,056,006 glossy white- and matte-cream-colored Swedish-made glazed ceramic tiles from Höganäs AB though, from a distance, the shells appear a uniform white...Architect: Jørn Utzon. Structural engineer: Ove Arup & Partners. Completed: 1973. UNESCO World Heritage Site 2007