Bunyesc was asked by a family of four—a couple with two young children, aged 1 and 2—to transform this aged structure into a modern home.

The architect wanted something energy-efficient, and while he had several renovations under his belt, he turned to an unusual material to harness the sun's energy: polycarbonate, a rugged plastic common to industrial architecture, sheds, and other lightweight construction.  Photo 2 of 6 in Guess Which Humble Material Made This 100-Year-Old Building Super Energy-Efficient