Kathmandu in Nepal is probably the most interesting as you can only approach from the south and the VOR/DME is critical as you have several gate hight/ranges - bust them and you'll smack into the mountain. The SID and MAP is spiral climb in the overhead until you reach a gate height and then you can shoot off down a valley to continue the climb. Its over 4000 ft and often quite hot. . .. .First time I went in there it was VMC and when you realise how close the mountain sides are it ceratainly maked me concentrate on the plate when I later went in IMC! I've flown the old HK curved ILS and Kathmandu is just as exciting, if not more so.