Barack Obama Visits Nelson Mandela's Prison Cell

+Barack Obama and his family is paying tribute to the ailing 94-year-old Mandela throughout the day. The president and his family were visiting Robben Island, where the anti-apartheid leader spent 18 years confined to a tiny cell. They also made a stop at the lime quarry where Mandela toiled and developed the lung problems that sent him to the hospital.

The White House said Obama’s guide during the tour was 83-year-old South African politician Ahmed Kathrada, who also was held at the prison for nearly two decades and guided Obama on his 2006 visit to the prison as a U.S. senator. The president also saw the prison courtyard where Mandela planted grapevines that remain today