The arched roof panels resemble a shell, or an onion, while the lava rock walls reference ancient Hawaiian temples, or heiau,[5] which are found along the Kona coast.
William Slatton created metal-work details throughout the home, including the entrance gate and the spires topping the three structures.
The roofs of the two main structures are supported by a series of cast-in-place concrete arches, radiating out from a central fireplace in each building.
This very site-specific architecture works in the gentle climate of Kona, where trade winds are buffered by Mount Hualalai, and temperatures range between 70-80 degrees Fahrenheit.
Previous to the sale in 2000, Beth McCormick began sharing the Onion House with the public as a vacation rental property, and it remains available for guests to stay in.