Guests from the architecture, design and real estate world gathered on March 19 at the 76th floor penthouse of Frank Gehry�s New York by Gehry building to celebrate the architect�s 82nd birthday and the formal opening of the 870-ft, stainless steel-clad lower Manhattan tower. The event�s host, Bruce Ratner, chairman and CEO of Forest City Ratner Cos., presented Gehry with a 40-inch silver birthday cake shaped like a tower designed by the architect as guests sang “Happy Birthday.” Pictured from left: Berta Gehry, U2 frontman Bono, Frank Gehry and Bono�s wife, Ali Hewson.