Spain's former monarch, King Juan Carlos (center), throws back Spanish matador Enrique Ponce's hat during a bullfight in Seville, Spain on April 9, 2016.
King Juan Carlos in Guatemala for president's inauguration
Spain's former monarch, King Juan Carlos (center), attends Guatemalan president Jimmy Morales' inauguration ceremony in Guatemala City on January 14, 2016.
Spanish royals at work on Monday
Spain's King Felipe VI and his father, King Juan Carlos, attend COTEC Foundation meeting at the Palace of Cibeles in Madrid on November 23, 2015.
Two Spanish kings attend COTEC symposium
Today in Rome, King Felipe VI of Spain delivered a speech in the presence of the president of Portugal, Aníbal Cavaco Silva (wearing red tie), and the president of Italy, Sergio Mattarella (at right), during the 10th COTEC Europa Symposium meeting on innovation and technology.
Spanish royals attend funeral of Infante Carlos
Spain's King Juan Carlos and Queen Sofia attend the funeral mass of Infante Don Carlos de Borbón-Dos Sicilias at El Escorial monastery on October 8, 2015.
Royal duties for King Felipe with his father and wife
Spain's King Felipe VI and his father, King Juan Carlos, received COTEC Foundation members at the Zarzuela Palace in Madrid on June 22, 2015.
King Juan Carlos speaks up for small businesses
King Juan Carlos of Spain presided over the closing of a business forum, Cumbre de Internacionalización (Internationalization Summit), on June 11, 2015 in Madrid. During his remarks, Juan Carlos said "Small and medium-sized businesses, which make up the fabric of our economy, are without doubt the best allies in internationalization."
High praise for King Felipe
Princess Leonor's First Communion
Spain's King Felipe (left); his wife, Queen Letizia; their daughters, Princess Sofia (left) and Princess Leonor (right); and Felipe's parents, King Juan Carlos and Queen Sofia, after the First Communion of Princess Leonor at Nuestra Señora de la Asunción church in Meco, Spain on May 20, 2015.
King Juan Carlos of Spain attends bullfight
King Juan Carlos of Spain attends the traditional spring bullfighting performance in Brihuega on April 11, 2015 in Guadalajara, Spain. (Photos by Europa Press/Europa Press via Getty Images)