A Unique Addition Monolithic Dome addition — This 36’ diameter dome adds needed space with little increase in overall energy costs. Living area — Its open design includes no interior supports so the owners chose an open floor plan with lots of windows. A Jetsons meet the Flintstones look! — That’s how owner Cristine Timmons thinks of her dome that she loves. Luxurious bath — The custom shower uses the dome wall, natural rock and concrete block. Bouquet of dried flowers — It complements the rough, shotcrete textured surface on the dome’s interior.