Our Great National Parks : Episode 1

Encompassing 24 unique national parks, the magnificent Chilean Patagonia is rapidly becoming one of the most protected places on the planet.

In Kenya's Tsavo National Park, thousands of elephants roam the breathtaking, vast landscape, along with hippos, rhinos, hornbills and more.

California's vibrant coastline gets its close-up, with an emphasis on the delicate balance struck between wildlife and humanity.

Next stop: Gunung Leuser National Park in Indonesia — home to some of the most endangered species on Earth, including the rare Sumatran tiger.