Abstract: A structure has eight walls forming an octagonal structure, wherein the walls are arranged to be self-supporting without the use of external fasteners, each wall having an internal face, a least one heat source arranged to provide heat to the structure as desired, a roof having an octagonal shape, the roof attaching to the walls without the use of external fasteners, and an enclosure formed from the walls and roof. A structure having at least three walls, wherein the walls are arranged to be self-supporting without the use of external fasteners, each wall having an internal face, a roof, the roof attaching to the walls without the use of external fasteners, and an enclosure formed from the walls and roof, wherein the walls and roof are manufactured only of natural materials.