Kids of all ages love the magic of castles! Even the smallest preschooler will spend hours building life-size castles and fortresses with this sturdy yet lightweight cardboard block set. In addition to the 3 basic blocks, this set contains arch pieces that demonstrate real architectural principles, turrets to construct towers with & even a castle door that converts to a drawbridge! Terrific for hours of imaginative play, this set can be used with other ImagiBRICKS� Giant Building Block sets for really GIANT fun! Made from 50% recycled cardboard, the blocks have a smooth, water-resistant coating for easy clean ups.