Take puzzling to a whole new dimension with this lovely pastoral setting - there's even a tiny cow out front! The Windmill Deluxe 3D Crystal Puzzle is a sleek, translucent, crystalline puzzle with 64 unique interlocking pieces. When completed, the windmill actually spins! This 3D puzzle has a difficulty level of 3 and measures approximately 4.5 x 7 x 2.75 inches when assembled.