The Lion population in the Masai Mara is the largest in Kenya, which makes it almost impossible to visit the Masai Mara without seeing some of them.
Serengeti
Serengeti National Park has the largest concentration of migratory animals in the world. There could be as many as 1.3 million wildebeest, 200,000 zebra and even more Thompson's gazelle, plus about 20,000 buffalo. There are 3000 lions in the Serengeti.