First off, I have to say Asian airlines kick the hell out of North American airlines. I highly recommend anyone fly with Thai Airways if they can, it was the bomb. The service was incredible! For a two and a half hour flight to Kathmandu I had four drinks, one awesome meal, a hot towel, pillow and blanket, customs forms, peanuts, and lots of smiles given to me.
One word to describe Kathmandu: Heavy. The air is humid and there is quite a bit of pollution, which makes it a little thick to breath. There's sound everywhere, honking (lots of honking), people talking, motorcycles, animals, birds, you name it. The streets are very narrow, roughly the size of our alleys back home, and they're full of people. It all sounds like a bit much, and it sometimes is, but it's still a really cool environment. There's never a shortage of things to catch your eye.
And thankfully the touts are not nearly as bad or as plentiful here as they were in Bangkok, that makes me really happy.