Long before the apartheid government opened its maximum security prison in 1961, Robben Island had served as a place of exile and punishment. Autshumato, a Khoi leader who had been reclaiming livestock stolen by European settlers, was imprisoned there around 1658. Imam Abdallah ibn Qadi Abdus Salaam -- known as Tuan Guru -- was held from 1780 to 1793 for his anti-colonial activities against the Dutch. During his thirteen years of imprisonment, he wrote the entire Quran from memory, a text that would become the spiritual foundation of Cape Town's Muslim community. Langalibalele, king of the Hlubi people, was imprisoned for resisting colonial authority. Chief Maqoma died on the island in 1873. The pattern was clear long before 1961: Robben Island was where colonial and apartheid powers sent the people they feared most.

When the apartheid government began sending political prisoners to Robben Island in 1961, the inmates transformed their prison into something the state never intended. They called it "the University" -- not as metaphor but as practice. Mandela and his fellow Rivonia Trialists, including Walter Sisulu, Ahmed Kathrada, Govan Mbeki, Andrew Mlangeni, and Raymond Mhlaba, organized classes and discussions. They debated politics, economics, and the future of South Africa. They studied. They taught one another. The prison held people from every strand of the liberation movement: ANC activists, PAC members, trade unionists, student leaders from the Soweto Uprising, poets like Dennis Brutus. The island became a place where the movement's fractured factions were forced into proximity and, often, into dialogue.

Three former Robben Island inmates became President of South Africa -- a fact that would have seemed impossible during their years of imprisonment. Mandela, sentenced to life at the Rivonia Trial in 1964, became the country's first democratically elected president in 1994. Kgalema Motlanthe, imprisoned for his ANC activism, served as president from 2008 to 2009. Jacob Zuma, who spent ten years on the island, served from 2009 to 2018. Beyond the presidency, the list of former prisoners reads like a roster of post-apartheid leadership: Dikgang Moseneke became Deputy Chief Justice, Tokyo Sexwale became a leading businessman, Murphy Morobe was a Soweto Uprising student leader. The prison that was designed to bury the liberation movement instead incubated its leadership.

The maximum security prison for political prisoners closed in 1991, as apartheid crumbled. The medium security facility for criminal prisoners followed in 1996. In 1999, Robben Island was declared a UNESCO World Heritage Site. Today, former political prisoners guide visitors through the prison, standing in the corridors where they once stood as inmates. They point to Cell 466/64. They describe the lime quarry where prisoners were forced to break rocks under a sun so bright that Mandela suffered lasting damage to his eyes. They speak of cold winters, inadequate food, and the censorship of letters. But they also speak of solidarity, of the music and debate that flourished behind bars, of the dignity they maintained in conditions designed to strip it away. The island sits 6.9 kilometers off the coast of Bloubergstrand -- close enough to see the city lights of Cape Town, far enough that the prisoners were utterly isolated from the world they were trying to change.