Serengeti National Park is the most famous park in Tanzania and one of the most famous in the world. The Serengeti ecosystem is home to more than 1,500,000 wildebeests, about 300,000 zebras, 500,000 Thompson’s gazelles, more than 2700 lions, 1000 leopards, 500 cheetahs, huge herds of elephants, eland, impalas, water antelopes, giraffes, ostriches, genets, and the waterways are populated by crocodiles and hippos; there are more than 400 species of birds. The 15,000 square kilometers of the Serengeti National Park are only the largest portion of a larger ecosystem, which also includes the Ngorongoro Plains (the flat region to the northeast of Ngorongoro Crater, which plays an important role in the famous migration and is administered by the Ngorongoro Conservation Area) and the Maasai Mara (located further north in Kenya). Here the orography, the composition of the soils and, consequently, the type of vegetation, allow sightings of animals unparalleled in Africa.