Happy 74th Birthday to architect Helmut Jahn Posted on January 4, 2014 by Chris This is the Sony Center he designed in Potzdamer Platz in Berlin. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Google+ (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on LinkedIn (Opens in new window)