The building comprises three groups of 'shells' built on a 186 x 97m cast-in-situ reinforced concrete base. Its unique design features sail-shaped shells as the roof and it is backed by the Sydney Harbour Bridge, forming one of Sydney's most dramatic views. This 3D Puzzle is made of paper and expandable polystyrene foam board, it is easy to assemble without the use of any other tools or glue. No of Pieces: 30 Model Size: 18.5cm x 13.3cm x 5.8cm. Age: 8+ years.