The Serengeti is a 9-letter term that is one of the World Heritage Sites. It is a large ecosystem located in northern Tanzania and southwestern Kenya, and is known for its vast grasslands and abundant wildlife. The Serengeti is home to the Great Migration, an annual event where millions of wildebeest, zebra, and other animals migrate across the plains in search of food and water. It is also home to the Big Five game animals, which include lions, leopards, elephants, rhinos, and buffalo. The Serengeti is an important part of the world's natural heritage and is protected by UNESCO.