Every magnetic tile collection eventually hits the same wall: squares and triangles make a box with a roof, and the child wants a house. This set is the answer PicassoTiles built for that moment. All 42 pieces are architectural, six shapes at seven of each, and every one of them is a wall a person can be seen through or walked through.

The mix is 7 windows, 7 arched windows, 7 double doors, and 7 each of three panel forms PicassoTiles names Letter N, Letter I and Letter H. The arched windows are the ones that change what a build looks like: they turn a square tower into something that reads as a chapel or a castle rather than a cube, and the double doors give a build a front. Because the cut-outs are open, light and hands and small figures all pass through, which is what turns a structure into a place.

PicassoTiles designed this to be added rather than started with, and it integrates with other full-size PicassoTiles magnetic tile sets already in the house. The set is stated by PicassoTiles as BPA free and non toxic with smooth rounded edges, and its box is marked Ages 3 to 99.