BERLIN, GERMANY - JUNE 23:  Queen Elizabeth II and Prince Philip, Duke of Edinburgh, arrive at Tegel airport on the first of their four-day visit to Germany on June 23, 2015 in Berlin, Germany. The Queen and Prince Philip are scheduled to visit Berlin, Frankfurt and the concentration camp memorial at Bergen-Belsen during their trip, which is their first since 2004. (Photo by Chris Jackson/Getty Images)