wa-gu-mi wooden 3D puzzles series features architecture landmarks, animals, dinosaurs and other Japanese cultural objects and scenes. [ Wamono Series ] Wooden 3D puzzle kit featuring katana samurai warrior sword from Japan. Wooden Japanese puzzle box for adults and 3D Puzzles have been very popular gifts for adults [ Easy Assembly ] The puzzle box includes wood sheets with precisely laser cut pieces designed to connect and build without any glue, making it easy to assemble for any craft and puzzle hobbyist [ Wooden Puzzle for Adults ] Unlike paper or cardboard castle kits, wooden pieces are sturdy and its size varies from nano to large - making the miniature models as detailed as ship in a bottle kits [ Fun at Home ] Great DIY project for seniors and adults staying at home - making it a good excuse to stay away from smart phones and video games.