Puzzles are a fantastic tool for cognitive and skill development for all ages. This one is sure to drive the most serious puzzler to dizziness with its subltle colour changes! It's the attention to detail which makes Ravensburger the world's greatest puzzle brand. Exclusively developed, extra-thick cardboard and fine, linen-structured paper, creates a glare-free puzzle image for a quality you can feel. Steel cutting tools are designed and crafted by hand. This ensures that no two pieces are alike and guarantees a perfect interlocking fit. Made in Ravensburg, Germany.