Fidel Castro, Cuba's former President and revolutionary leader, looks at the camera during a rare public appearance to attend the inauguration of an art gallery on January 8, 2014 in Havana, Cuba.
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Workers unload materials at Ariel Castro's home in Cleveland, Ohio, May 10, 2013.
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Does Castro's resignation mean real change?
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Fidel Castro speaks at a rally June 21, 2004 in Havana, Cuba.
Estudios Revolucion, Cubadebate / AP
Fidel Castro, left, stands with U.S. journalist of The Atlantic, Jeffrey Goldberg, second from right, and Cuban Jewish Community President Adela Dworin, third from right, at the National Aquarium in Havana, Cuba on August 30, 2010
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Fidel Castro waves during a special session of parliament, his first official government appearance in front of lawmakers in four years in Havana, Cuba.
Cubadebate, Alex Castro / AP
In this photo released by Cubadebate, Cuba's former President Fidel Castro, bottom, back to camera, attends the inauguration of the cultural center, Studio Kcho Romerillo, Laboratory for Art, in Havana, Cuba, late Wednesday, Jan. 8, 2014.
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Fidel Castro waves to the press from the window of his BMW.
Diego Giudice / archivolatino / Redux
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Fidel Castro in 2006.
Franklin Reyes / AP
A poster of Cuba's Fidel Castro hangs on the wall of a food market next to plate that reads in Spanish "I'm looking at you" in Havana, Cuba, Tuesday, Aug. 13, 2013.
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Cuban President Fidel Castro meets with Wu Guanzheng, member of the Standing Committee of China's Communist Party, in Havana, April 20, 2007.
Cuba's revolutionary leader Fidel Castro speaks to supporters at the Batista military base Columbia, now known as Ciudad Libertad in January 1959
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Cuban leader Fidel Castro in Havana, Wednesday, Sept. 13, 2006.
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Cuban President Fidel Castro, left, and his brother Raul in 2003
Cuban President Fidel Castro waves a Cuban flag at a rally in Havana
Jimmy Carter listens to Fidel Castro during a presentation in Havana
A Venezuelan girl wishes Fidel Castro a happy 75th birthday
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Pope Benedict XVI and Cuban leader Fidel Castro shake hands during a meeting on March 28, 2012 in Havana.