But walking in Bolivia is also an experience in diversity: one day you can be in snow-covered mountains and the next you might descend through moss-strewn cloud forests to jungle lowlands.

BBC: In Bolivia, awe-inspiring scenes at every turn

Adrenaline junkies descend on Durmitor from May through October for unrivalled rafting on the Tara River Gorge.

BBC: An adventurer��s paradise in Montenegro

Schussing your way through the sparkling powder is the premiere reason both outdoor types and the glitterati descend every winter, but Aspen has plenty of all-season activities on hand, from fly-fishing to mountain biking to kayaking in areas such as Snowmass Lake and the Maroon Bells peaks.

BBC: Living in: Great cities for outdoor adventures