Picture a round deck about 20' in diameter. There is a roof over the whole thing. In the center of the circle is a big spindle that the deck is mounted to. On the perimeter of the deck are solid rubber wheels about every 4'. The wheels roll in a track. The entire deck can be rotated easily by hand. The idea and execution were perfect. I neglected to ask who did the design and construction.
Has anyone seen or heard of plans for a deck like this?