Visit the Quebrada de Humahuaca

Hike between medieval tower villages under the highest peaks of the Caucasus.

Visit El Chalten, a small town in Argentina known as the trekking capital of South America, located near Mount Fitz Roy in Patagonia.

Climb 740 steps up the El Penol monolith for views over a maze of turquoise reservoir lakes.

Rhyolite mountains streaked orange, green and pink, with a natural hot river to soak in after the walk — the start of the Laugavegur trail.

Berber villages below snowy peaks.

Hike between Hmong and Dao villages through emerald terraces cut into the mountains near the Chinese border.

Apricot orchards and forts beneath 7,000-metre Karakoram peaks.

Classic Himalayan trekking circuit.