Ngorongoro Crater is a volcanic caldera - the collapsed upper cone of an ancient volcano. Its high walls contain a microcosmic ecosystem, with lakes, forests, and plains supporting hundreds of species of wildlife. The views from the misty highlands of the rim are spectacular, as is the abundant wildlife on the crater floor.
Mt Kilimanjaro National ParkAn almost perfectly shaped volcano rising sheer from Tanzania's northeastern plains, Mt Kilimanjaro is one of Africa's most magnificent sights. Snowcapped and not yet extinct, at 5896m (19343ft) it's the highest peak on the continent.
Jozani ForestA tiny patch of pristine rainforest right in the centre of Zanzibar island, Jozani Forest is home to the extremely rare Red Colobus monkey, the Ader's duiker antelope, and numerous bird species. There's a mangrove boardwalk through the trees and a small education centre.
Serengeti National ParkWaving golden grasses, flat-topped acacia trees, distant blue hills. Herds of wildebeest sweeping majestically across the plain. Stately giraffes, indolent lions, stealthy cheetah. How do you describe the Serengeti without using every cliché in the book? Perhaps in the words of Alan Moorehead - 'Anyone who can go to the Serengeti, and does not, is mad.'
Selous Game ReserveThis reserve is one of the earth's last great wild places: 55,000 sq km (21,235 sq mi) of untamed bush, crocodile-filled lakes and emerald green floodplains. The only accessible bit is the northern section above the great muddy sweep of the Rufiji River, where you'll see hippos, elephants, zebras, a maneless variety of lion and the rare African wild dog.