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Spain's King Juan Carlos smiles in one of his latest audiences at the Zarzuela Palace outside Madrid, May 27, 2014.

In this photo released by the Royal Palace, Spain's King Juan Carlos signs a document in the Zarzuela Palace opening the way for his abdication, June 2, 2014.

Spain's King Juan Carlos, his son Crown Prince Felipe and granddaughter Infanta Leonor pose at Zarzuela Palace in Madrid, July 26, 2012.

Spain's King Juan Carlos kisses the ring of Pope Benedict next to Spain's Prime Minister Jose Luis Rodriguez Zapatero at Madrid's Barajas airport, August 18, 2011.

Spanish King Juan Carlos drinks wine out of a large traditional glass of Germany's Rhineland-Palatinate area during a visit in Deidesheim, Germany, July 17, 1997.

Spain's Princess Elena waves to the crowds as she is escorted by her father King Juan Carlos to the altar of Seville's cathedral on March 18, 1995.

King Juan Carlos of Spain is thrown into a swimming pool after winning the King's Cup Yacht Race in Palma de Mallorca, August 8, 1993.

Former Spanish dictator General Francisco Franco salutes beside his wife Carmen Polo, the then Prince Juan Carlos of Spain and his wife Princess Sofia as they listen to the national anthem during a ceremony at El Pardo Palace, Oct. 4, 1975.