Great Educational and Fun Gift for Children 3D puzzles are great for developing children's intelligence and logical ability, cultivating hands-on ability, developing imagination, as well as increasing patience. Have fun creating with your family and friends. Product Introduction Our high quality and detailed products, made using advanced laser cutting technology, have passed the European Union, the United States, and other test certifications(EN71, ASTM, 7Pm HR4040/3C). Made from Eco-friendly paper and EPS foam boards, our products are safe and easy to assemble, no tools necessary. Assembly Instructions 1. Push out the pre-pressed mold carefully. 2. Build the molds in letter order. 3. Follow the illustrations to complete the assembly step-by-step 4. If a joint is loose, fix with glue. The Tower of London, also known as Her Majesty's Royal Palace and Fortress of the Tower of London, is a historic castle located on the north bank of the River Thames in central London. Advanced laser cutting technology used to make this high quality and detailed model. Easy to fit and safe to assemble, no tools like glue or scissors neccesary. Made from Eco-friendly paper and EPS board. Have fun creating it with your family and friends. Good for developing intelligence, cultivating children's hand-on ability and encouraging their imaginations. Puzzle quantities: 36 pieces; Assembled puzzle dimensions: 7.5 x 7.5 x 7 in; Difficulty: Moderate; For Age 6+; Children's favorite gift!