Hike the Dana Biosphere Reserve

Africa’s largest canyon, 160 km long and 550 m deep, with a five-day hike along its floor.

Hidden desert waterhole in the Ennedi where camel caravans meet Nile crocodiles.

Patagonia’s granite towers, glacier lakes and the classic W trek.

Two-week trek up the Baltoro Glacier to the foot of the world’s second-highest peak.

Climb the vast flat-topped tepui.

A 165-km, ten-day wilderness trail from the ice sheet to the coast with huts, reindeer and no roads.

Sandstone arches and rock art in the Sahara.

The Osa Peninsula park National Geographic called the most biologically intense place on Earth — tapirs, scarlet macaws and all four Costa Rican monkeys.