On Monday, President Bola Tinubu hosted business mogul Aliko Dangote and Bill Gates, co-chair of the Bill & Melinda Gates Foundation, at the State House in Abuja.
The visit is part of the Gates Foundation's commitment to collaborating with communities and leaders to foster innovation.
Issues of global health and development, as well as Nigeria's place in the community of countries, are expected to be discussed at the summit, which is taking place behind closed doors.
Watch the moment Dangote and Bill Gates arrive at the presidential mansion below: