The Maasai people are possibly the most famous ethnic group in East Africa. They are popular because they are one of the few ethic groups that have retained their culture and traditions. The majority of the Maasai inhabit the areas between the Southern Kenya and Northern Tanzania. And these are the areas with popular national parks and reserves. (They are known to co-exist with wildlife). The Maasai Mara and Amboseli national park in Kenya.