"The Last World Trade Center Beam" Puzzle. Acclaimed puzzle manufacturer Ravensburger of Germany teams up with the Ground Zero Museum Workshop to present a 1,000-piece puzzle of Gary Suson's The Last Beam which is on display at the 9/11 Memorial Museum. Presented in a special, limited edition hard-shell collector's tin. Completed size measures 20 in. x 27 in. 30-Day Delivery.