Serengeti national park is found in the Mara and Simiyu regions. Most famous for its annual migration of the wildebeest, Zebras, crocodiles, and honey badgers. This park is one of the most visited parks in Tanzania, making January to February or from June through September be the best times to visit Serengeti. For extensive coverage of the park 2 to 4 nights at the park to view a wide variety of wildlife.