From its highest peak to its animals to its fascinating culture and history, this 19-day tour leaves none of Tanzania's stones unturned. The challenge begins with a six-day trek up and down Mt Kilimanjaro's Machame route before you embark on a safari through the Serengeti to see your favourite nature documentaries unfold in real life. Complete the adventure in tropical style, snorkelling through the turquoise waters of Zanzibar, or by simply by lounging on the white-sand beaches nearby to revel in the incredible life experiences you've just had.