[ Architecture Series ] Wooden 3D puzzle kit featuring Matsumoto castle in 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. [ Great for Gifts ] Make your own 3D puzzles and wooden model building kits are great birthday gifts and party favors for any adult craft hobbyists