Something a little different. Not at all practical for production. Maybe for a hobbyist. It is a cross between a topbar hive and a skep.
Be sure to look at all the pictures at the bottom of the page.
http://www.naturalbeekeepingtrust.org/sun-hive-biodynamic-initiative-0 (http://www.naturalbeekeepingtrust.org/sun-hive-biodynamic-initiative-0)
Very nice. Pure aesthetics, I can't see how this is any better for the bees. There is nothing here that can't be accomplished with Langstroth hives.