Combine mountain gorilla trekking in Rwanda's Volcanoes National Park with chimpanzee habituation in Uganda's Kibale Forest — the primate capital of Africa. Rwanda's gorilla permit is the world's most expensive at $1,500 but the trek itself is shorter and the families larger. Uganda's Kibale hosts the highest density of primates in Africa, including 1,500 chimpanzees. Seven days, two countries, two life-changing primate encounters.