This is testament to the fact that designing a green home doesn't necessarily have to be radical or even require a lot of money to make it more efficient. This home utilized natural heating and lighting to great effect, and it was constructed more than 30 years ago! Read more after the jump.
Constructed from half of a grain silo roof, and corrugated metal siding, the structure was passively solar heated through south facing plastic bubble windows, a sliding glass door, and a large translucent fiberglass sloping roof.
Read More: on Solar Vacation House by Michael Jantzen Is Still Relevant at TreeHugger
(images: Michael Jantzen)