The French company Focus has designed a truly beautiful barbecue grill that folds into the wall:
From pg. 120 of the focus catalog, the Sigmafocus:
Finally — an alternative to the unattractive contraptions on capricious wheels that have cluttered up our gardens and decks for so long. The Sigmafocus and the Diagofocus [another product Focus offers] prove that aesthetics and ergonomics aren’t confined to interior design. It can be used with either wood or charcoal and comes equipped with a stainless steel grill and a range of barbecue tools. The quality and thickness of the steel used guarantees the longevity of the barbecue, which meets the EN 1860-1 standard.
This wall barbecue for gardens and balconies folds up, so that when closed it takes up limited space.
Attractive in both open and closed positions, it offers a range of cooking heights. It is easy to fix to any-wall (there are only two fixation points).
The generous ash pan allows the barbecue to be used a number of times without having to empty it out. The disc that attaches to the wall protects the wall from smoke.
I couldn’t find a price or shipping details, but the full contact information for the company is in the back of the online catalog and on the company website. I cannot tell you how amazing I think this grill is, especially for someone like me with the world’s tiniest backyard. Genius!