King Frederik X succeeds Queen Margrethe II COPENHAGEN, DENMARK - JANUARY 14: The Crown Prince is formally proclaimed new Danish King Frederik X by the Prime Minister, Mette Frederiksen on the balcony of Christiansborg Palace on January 14, 2024 in Copenhagen, Denmark. King Frederik X is succeeding Queen Margrethe II, who will be stepping down after reigning for 51 years. (Photo by Sean Gallup/Getty Images) (Sean Gallup/Getty Images)