▲One of Castro's closest friends was Hugo Chávez, the President of Venezuela from 1999 to 2013.

▲Throughout most of his life, the Cuban leader preferred wearing military uniforms. But in his later years it was common to see him wearing sports clothes.

▲The Cuban leader was a sports fan and spent a lot of his time working out.

▲In 1955, Castro went to Mexico with his brother Raúl and Che Guevara. They founded the 26th of July Movement. The group's goal was to fight the regime of Cuban dictator Fulgencio Batista.

▲In September 1960, Fidel Castro spoke for four hours and 29 minutes at a United Nations meeting. The speech is included in the Guinness Book of World Records.

▲During the 1960s, Castro formed an allegiance with the Soviet Union. He allowed for the Soviets to bring atomic missiles to Cuba, which sparked the Cuban Missile Crisis. Castro is seen here next to Nikita Khrushchev, the Prime Minister of the Soviet Union during this period.

▲In 1959, Fidel Castro supported those who wanted to unseat Rafael Trujillo, President of the Dominican Republic.

▲Fidel Castro was the third longest-ruling leader in the world, topped only by Queen Elizabeth II and the King of Thailand, Rama IX.

▲American historian Theodore Draper created the term "Castroism" to describe the combination of European socialism and Latin American revolution.

▲According to the BBC, after the Cuban revolution, homosexual people were persecuted. Years later, Castro said he regretted this.

▲Throughout his political career, he had dealings with 10 US Presidents, from Eisenhower to Clinton.

▲Castro used to work late nights, and on many occasions stayed in his office until dawn. He often met diplomats late at night and used their tiredness as an advantage in negotiations.

▲The politician met the first man to travel to space, Yuri Gagarin, when the astronaut visited Havana.

▲Castro is known for his iconic quotes, including "Condemn me. It does not matter. History will absolve me."

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According to CNN, Cuban officials said that Castro was a target of over 600 murder attempts.

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His full name was Fidel Alejandro Castro Ruz. The surname Castro comes from his dad, Ángel Castro y Argiz, while Ruz came from his mother, Lina Ruz González.

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Ubre Blanca was the name of one of Castro's cows. She held the record for the largest milk production in one day—over 100 liters.

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The controversial figure had a legion of famous supporters, including director Oliver Stone.

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Ernest Hemingway was one of the Cuban President's favorite authors. They met in 1960, and the American writer even had a Cuban permanent residency permit.

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Castro kept his personal life discreet, but he is known to have had at least seven children.

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For many years, Castro enjoyed cigars. He quit in the 1980s.

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Time magazine named Fidel Castro as one of the 100 most influential people of all time.

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According to the online edition of the East African, Castro didn't like to shave because he thought it was a waste of time.

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Castro spoke fluent English, but rarely chose to.

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Fidel Castro passed away on November 25, 2016. From 1959 to 1976, the Cuban politician and revolutionary was the country's prime minister. In 1976, Castro took over as president, an office he kept until 2008. In this gallery, we look at his life. Click on for more