I like the duality between the stone and the wood, doesn't have to be exactly like it but presents a good shelter and oven idea.
Wonderful design. Pizza oven on top. fireplace below with rotating floor of pizza oven to form back of fireplace. Full set of pictures on Flickr. Some discussion on http://www.fornobravo.com/forum/6/fireplace-below-pizza-oven-above-439-2.html.