Speaking of Mother Nature's gifts, Ngorongoro Crater is definitely such a place. Situated inside of the Ngorongoro Conservation Area, a UNESCO World Heritage Site located in the north of Tanzania, it is regarded a new wonder because of its perfect ecological system. It is the second largest crater in the world, with 18 kilometers in diameter and 610 meters in depth. The amazing environment makes it a paradise for animals, boasting more than 30,000 species like elephants, zebras and elands.