Have you ever seen a residential block like this...
If you have any other examples then please let me know, but for the moment, I'm mesmerized by this. This is called the Urban Cactus and it's a concept proposed for the Rotterdam harbour.
The designers (UCX Architects) have created a concept for how 98 residents can live in 19 floors. The main motivation was that it needed to create a green image due to its location by the harbour and each apartment needed optimum sunshine exposure. Thanks to the rotatory design, each balcony has a larger outdoor space than you'd usually find in an ordinary tower block.
Thankfully, this design has been accepted and building should be commencing next year. Can't wait to see it in the flesh.