In 1974, architect Bengt Warne designed the prototype for a greenhouse home to deal with the cold winters in Sweden. Rather than converting an existing structure and moving inside it, he built a normal house — and then encasing it in glass — a Nature House (or “Naturhus” ). Inspired by these designs, a family has created a home near Stockholm integrated with the elements of earth, water, air, and fire. The electricity bills have been cut in half, heated by an eco-friendly wood-burning oven and a hot water masonry heater. The greenhouse also shelters Mediterranean-style gardens that couldn’t survive the Swedish seasons — figs, kiwi, peaches, wine grapes, etc.