Abstract: The invention discloses a house or other structure defining an enclosure whose walls are constituted as multiple puzzle pieces. The disclosure extends to any sculpture-like three-dimensional puzzle where the walls defining the sculpture or structure are composed of self-standable puzzle-pieces, and the sculpture or structure is itself self-standing.

Abstract: The invention discloses a box-like container open on one side thereof. A removable wall is slidably received through the open face of the box-like container, the wall being smaller than the open face, and having extending tongues on each of the ends that are larger than the open face. Slots are provided in the walls of the box confronting the tongues, and the wall is retained in the box by engaging the tongues in corresponding openings.