A Magical, Off-Grid Guesthouse Disappears Into the South African Bushveld

House of the Tall Chimneys is entirely off the grid. Power is generated with solar panels; black and gray water is contained and managed before it’s further filtered by the undergrowth; and potable water is collected from the nearby stream. "More important than these technological fixes, however, is the fact that the building requires very little in terms of resource input in order to function successfully," says Frankie Pappas. "Careful design is probably the most fundamental aspect in designing environmentally sustainable buildings."