GDANSK, POLAND - JULY 18: (NO UK SALES FOR 28 DAYS FROM CREATE DATE) Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge walk with survivors as they visit Stutthof, the former Nazi Germany Concentration Camp during day 2 of their Royal Tour of Poland and Germany on July 18, 2017 in Gdansk, Poland. (Photo by Pool/Samir Hussein/WireImage)
