A brand new ravensburger 3d jigsaw concept using the latest puzzle technology from germany this puzzle uses unique hinged plastic pieces which slot together to build a sturdy and strong building no glue required the big ben building 3d puzzle has got 216 high quality plastic pieces and measures 41cm tall when complete each puzzle piece is printed with a number on the reverse side so you can either assemble the puzzle by eye or just by following the numbers big ben building 216 piece 3d