BERLIN, GERMANY - JUNE 24:  German President Joachim Gauck (R) and his partner Daniela Schadt (L) greet Queen Elizabeth II and Prince Philip, the Duke of Edinburgh, at Schloss Bellevue palace on the second of the royal couple's four-day visit to Germany on June 24, 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 to Germany since 2004.  (Photo by Sean Gallup/Getty Images)