The Chicago Spire by Santiago Calatrava. It’s not a secret that he’s my favourite contemporary architect at the moment. Good little promotional website. The thing is though listening to the interview, you’d get the impression that high rise residential buildings don’t get made…erm I’d like to disagree there, hundreds of buildings exist that are high rise are not for the corporations at all. This is unique maybe in that it does have a certain level of uniqueness in design, although some of these ideas have been used before in something like the Swiss Re building in London, by Foster & Partners.