The Clock Tower, known as Big Ben, is the world's largest four-faced, chiming clock. The structure is situated at the north-eastern end of the Houses of Parliament in Westminster, London. The 3D puzzles are made of paper and EPS foam board, its safe and convenient to assemble without the use of any other tools or glue. No of Pieces: 36. Model Size: 62.5cm high x 47cm long x 25cm wide. Age: 8+ years.