World's Greenest Homes Season 1 Episode 21 Chicago House

Faced with a derelict 3000 square foot warehouse, a Chicago couple transforms it into a luxurious home, filled with unique green technology. Preserving 90 percent of the building's original brick shell, they installed solar panels, wind turbines, and an ingenious underground cooling system drilled into the bedrock. The sprawling home also features a lush central courtyard, a greenhouse, and a living roof.

Two hours North of Sydney, this family's modern retreat proves you can live in complete comfort - completely off the grid. The home's unique green features include natural ventilation and a cinderblock fireplace that retains heat for hours. The home also features sweeping valley views, and a unique sprinkler system to protect it from the area's common bush fires.