We don't usually have two stairs of the week on one day, but we couldn't pass this one up. It is by Jordivayreda Projectteam from Spain, where they evidently either don't have building inspectors or they just appreciate good design. They are not very green, and strictly speaking you cannot even call them minimalist, given that there is probably more steel behind the wall supporting the cantilever than you actually see. But they are pretty.
Most commenters at apartment therapy are appalled, considering them unsafe. I think the interesting question is how we are so afraid of innovation, that we wrap ourselves in so many rules, that we just look at this and our first thought is "someone will kill themselves on that." I actually am beginning to agree with commenter Nightrain who said "Good God, you're all so uptight. Waaa waa waa, code, safety, blah blah. It's not your house, so lighten up." ::Jordivayreda Projectteam, whose site is crashed due to demand, via ::Apartment Therapy also on ::BoingBoing