I'm not a pro...In looking around, I've never seen one like that. You could have one built - I'm assuming you want this totally free-standing? I did see some kits designed for tiling that could be quickly assembled then tiled. These were made by a company in (I think) Germany. www.wedi.de some really neat designs. They have a US distributor, but I've don't know how easy it is to find. One design they had was sort of a spiral, there wer others, too. Pretty neat.