While the validity of "starchitecture" as a term is up for debate, there's no denying the presence of high-profile, highly ambitious architects—nor the oft outrageous proposals they and their minions whip up. Condos like dew drops? Thanks, Zaha Hadid. A blocky Lego museum? Well done, Bjarke Ingels. Smurf villages on top of residential buildings? Dank je, MVRDV. Indeed even United Nations lounges (above) get the loud (and stunning) starchitect treatment, thanks to Rem Koolhaas. Below, 26 proposals and projects so bold only well-lauded architectural money-makers could them pull off.