An Agrithermosphere An agrithermosphere — This Monolithic Dome was designed as an indoor agriculture system. Does Santa live here? — This dome is a tear-shaped structure with a 45’ diameter at its largest end and an interior with 2000 square feet. Swim anyone? — The agrithermosphere includes a heated pool that helps maintain a constant indoor temperature of 70 degrees. Pool — Due to the use of an ozone technology system that virtually eliminates any chance of bacterial problems, the pool water is chemical-free. Indoor farming — With a minimum of labor and power, the owner grows many useful plants! Dome promoted rumors — To quiet the rumors and put suspicious neighbors at ease, the owner invited them in for a tour of the dome. Farm site — The agrithermosphere sits on a 100-acre farm in Marengo, Illinois.