Traditional Russian Fireplace labyrinthine brickwork, one of the earliest forms of masonry stove. They are substantially more efficient than open fires, but with limited air regulation waste a lot of heat up the flue when the fire is out.
Recycled Greenhouse: this greenhouse is made from the windows of an old dairy farm. Virtually all the materials are recycled, save for the galvanized screws that hold it all together. It provides the perfect greenhouse for budding annuals.