4 Days Serengeti and Ngorongoro crater safaris. The safari will take you around two best places in Tanzania, The Ngorongoro Crater which is known also as the Garden of Eden, Serengeti National parks and Serengeti National park Serengeti National Park is a Tanzanian biggest national park. Serengeti national park it is well-known for its annual migration of over 1.5 million white-bearded wildebeest and 250,000 zebra and for its numerous Nile crocodile and honey badger.