The hexagonal home built of honey-colored swamp wood and sandstone includes features he invented - radiant floor heating and the carport - plus Wright-made furniture.

BBC: From Warhol to Wright: An arty trip through Pennsylvania

The 12, 700-square-foot Energy Star-certified house was crafted from low-toxic materials, withstood air tightness tests on the insulation, and has a water furnace geothermal system that provides hot water, radiant floor heat and air conditioning.

FORBES: Off-The-Grid Mansions

The laundry list of green features of each Oil Silo Home is exhaustive: super-thick insulated wall panels, rainwater recycling systems, rooftop gardens, natural ventilation, EV charging stations, radiant floor heating, green walls, and the list goes on and on.

FORBES: Written by Matt Hickman