Tower Spires And Windows offers a thoughtfully designed, durable resource for hands-on learning. Add a bit of sparkle to your rustic wooden construction and small. world areas. _x000D_ _x000D_ _x000D_ W5cm x L5cm. _x000D_ _x000D_ _x000D_ Sizes vary. _x000D_ _x000D_ _x000D_ Rec 3+. _x000D_ _x000D_.