The memorial service for former South African President Nelson Mandela on Tuesday is poised to be one of the largest such gatherings in generations with tens of thousands of local mourners and almost 100 foreign leaders expected.

South African officials say the normal seating capacity of Johannesburg's FNB stadium of 95,000 probably won't suffice to accommodate all mourners, and the event is broadcast live to other stadiums and venues across the country.

The red markers represent the countries or organizations sending dignitaries, while the yellow markers represent those who are speaking at Tuesday's memorial service.

With files from The Associated Press