This freestanding house-by-a-tree is a multipurpose wooden play structure, standing on its own construction. It can be erected close to trees that are unable to support additional weight. This tree house, conceived with contemporary design principles, is not modelled on any of the classic tree house forms that take their inspiration from either real houses or garden sheds. Instead, children are offered a different understanding of shapes, new spatial experiences and new forms of play.The house is made of spruce plywood, protected on the exterior by a colourless nano-varnish. The roof is covered in a roofing cardboard that shields against most kinds of unfavourable weather conditions.Furnishings are minimal, constructed from dowel pins that we made with kids one Sunday afternoon.