In the 1970s, Swedish eco-architect Bengt Warne built his radical Nature House. Essentially a conventional home wrapped within a greenhouse, the Nature House served not only as a testbed and research center, but a home where he and his family actually lived, warmed year-round by the sun.
Over a decade ago, French engineer Charles Sacilotto had become intrigued by the Nature House idea. "I thought it was a kind of Utopia to live like that," he told Radio Sweden. Sacilotto reached out to Warne, and the architect designed a greenhouse for Sacilotto's home in Sweden. Here are the results, including the neat side benefit of no longer needing a roof and being able to turn that upper space into a terrace:
While the greenhouse is undoubtedly the star of the video, I was equally impressed with Sacilotto's DIY, zero-waste sewage system. The centrifuge and system of multiple tanks would undoubtedly be daunting to most DIY'ers, but it was probably child's play for Sacilotto; though he now works as a schoolteacher, in his previous career the man was a nuclear power engineer.
Warne passed away in 2006, not long after completing the design of the greenhouse in the video. If you'd like to learn more about Warne's work and eco-principles, there is a website dedicated to him here.