Yellow brick schoolyard

Opposite my home is the Öland Folk high shool. I thought it made a nice blip now that nearly all the leaves has left their home-tree. 

There are two balls in the picture, the small one is slightly to the right of the big one, almost hidden by the leaves. There is an art course in the school and the students made the installation years ago. I don't know if it still works but the two balls are placed in a circular slot so that you can roll them around (seems a bit dangerous, the big one is very heavy).