PLAY STRUCTURE AND STRUCTURAL BUILDING ELEMENTS FOR BUILDING A PLAY STRUCTURE

Building elements for constructing a play structure comprise polyethylene members. In one embodiment, the members are extruded cylinders and include notches or other interlocking features. In another embodiment, the members are flat panels and include notches, teeth, apertures or other interlocking features. A play structure comprises a plurality of the building elements connected to one another. In one embodiment, the play structure comprises a cabin. Walls of the cabin are constructed by interlocking elongate wall elements. The cabin includes a roof constructed from interlocked flat panels or slats. A roof support elevates the roof over the walls and connects the roof to the walls. A method of constructing a play structure comprises assembling a plurality of the building elements.