And you can now add Rem Koolhaas to the ever-growing list of starchitects designing luxury condos in Miami. On the roughly 6-acre site, Koolhaas creates two 20-story cylindroid towers of glass and what appears to be concrete. The structures' floor-to-ceiling windows—no surprise there, this is oceanfront Miami after all - are separated by vertical columns that subtly undulate as they rise. >>>