For many, stepping off a plane into Kathmandu is a pupil-dilating experience, a riot of sights, sounds and smells that can quickly lead to sensory overload. Whether you’re barrelling through the traffic-jammed alleyways of the old town in a rickshaw, marvelling at the medieval temples or dodging trekking touts in the backpacker district of Thamel, Kathmandu can be an intoxicating, amazing and exhausting place.