Britain's Prince William, Duke of Cambridge (C) and his wife Kate, the Duchess of Cambridge, and Hamburg's mayor Olaf Scholz (L) visit the Airbus A320 production site in Hamburg-Finkenwerder om July 21, 2017.  
The British royal couple are on the last stage of their three-day visit to Germany. / AFP PHOTO / POOL / Daniel Bockwoldt        (Photo credit should read DANIEL BOCKWOLDT/AFP/Getty Images)