Rainbow Architect Houses 7 PiecesBUILD, NEST & EXPLORE THROUGH OPEN ENDED PLAY The Rainbow Architect Houses Set offers a beautiful, tactile way for toddlers and young children to engage in open ended, creative play. Made from solid beechwood with a smooth, natural finish that highlights the grain, these seven colourful nesting house shapes are designed in the vibrant hues of the rainbow. Ranging in height from approximately 6cm to 12cm, the pieces can be stacked, nested, sorted by