Inspired by R. Buckminster Fuller's patented geodesic structure, this plastic outdoor sun dome served as the perfect lawn accessory for readers who couldn't wait for the onset of summer. On sunny days, the temperature inside the structure was 20 to 30 degrees higher than the temperature outside. You could use it as a pool cover, a greenhouse, a family playroom, and even as an insect shield during barbeques.
The domes came in three sizes: 16 1/2 feet, 25 feet, or 30 feet in diameter. One Popular Science reader purchased plans for the 25' model and built it using just clear pine, polyethylene film, and a staple gun.
Read the full story in "Amazing Sun Domes You Can Build"