Fun 3 dimensional Puzzle, from Cubic Fun Enjoy getting lots architecture historical knowledge while assembling Encourages your hands-on ability, and logical thinking. Inner Including: 31 pcs , Safe & Green:No tools and glue needed, Made of paper and EPS foam board Easy to assemble, no scissors required, no gluing Display as an art/decoration/collection. Great gift for children/friends. Family Puzzle. Discover history of architecture