The walled city of Harar and the Gedeo agroforestry landscape: two of Ethiopia's twelve World Heritage inscriptions, beyond the two everyone already knows.
The Osun sacred grove and the terraced hill settlement at Sukur: two World Heritage sites in Nigeria, one in the south west and one on the Cameroon border.
Three World Heritage sites in Cameroon: a rainforest reserve, a share of a park spanning three countries, and a dry-stone landscape with unknown builders.