Dublin's Lord Mayor will share a stage with Winnie Mandela in Johannesburg this evening.
Oisin Quinn is in the city to accept the handover of the One Young World baton from South Africa.
Ireland will host what is the largest youth event in the world outside of the Olympics Games in 2014.
In front of an audience of 1,300 delegates under the age of 30 and big-name dignitaries, the mayor will lay out Dublin's plan for the summit.
Independent.ie understands that in his speech the Lord Mayor will mention the Mary Manning, the 21-year-old worker who sparked a strike at Dunnes Stores in the 1980s over the sale of South African produce.
He will also pay tribute to Nelson Mandela who is a Freeman of Dublin City.
Twelve young people from Ireland were among the delegates at this year's summit.
One Young World aims to empower young people to make positive change in society.
The summit will be held in the Dublin Convention Centre from October 15-19, however the plan also includes events in Croke Park, the Bord Gais Theatre and the Iveagh Gardens.
Tonight's speech will also be live-streamed on Independent.ie from 6.30pm. In the meantime, you can watch events in Johannesburg live below.