Kathmandu offers some terrific places for all those cliff hangers out there who like crawling up vertical cliffs with their fingernails. If you do not have the time to take on some Himalayan peak during this visit, the valley perimeter offers a number of stone walls guaranteed to keep you on your toes (fingers?). Of late, rock climbing has become a popular sport in Kathmandu and the surrounds offer some awesome places for rock climbing. Nagarjun, Balaju, Shivapuri and Budhanilkantha are some of the spots where you can try this nail-trimming sport.