The Leaning Tower of Pisa is known worldwide for its unintended tilt. Construction started at 1173 and occurred over 199 years, completing in 1372. 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 necessary.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.3D puzzles are great for developing children's intelligence and logical ability, cultivating hands-on ability, developing imagination, as well as increasing patience.