In one of their final official engagements before King Juan Carlos I of Spain cedes the throne to his son, Prince Felipe, the king, along with Queen Sofia, have welcomed the President of Mexico, Enrique Pena Nieto and his wife to Madrid. King Juan Carlos and Queen Sofia hosted a lunch at the Zarzuela Palace on June 9, 2014. An evening reception at the Royal Palace was also held. Both events were attended by Prince Felipe and Princess Letizia. Photos by Getty Images.