“The World Trade Center Cross” Puzzle. Acclaimed puzzle manufacturer Ravensburger of Germany teams up with Ground Zero Museum Workshop to present a 1,000-piece historical puzzle. On 9/11, two steel beams broke off from the 67th floor of the World Trade Center and land upright in the shape of a giant cross, which is now on display in the 9/11 Memorial & Museum. Regarded as the finest image ever taken of this iconic symbol of hope at Ground Zero. Presented in a special, limited edition hard-shell collector's tin. Completed size measures 20 in. x 27 in. 30-Day Delivery.