[rafram]

Sometimes you can. Depends what you want out of it. I've only spent a very short time in London, but I live in New York, and some evenings all I need to do to be happy is walk to the middle of the Brooklyn Bridge and look at the lights and the people. Same reason I don't really need an itinerary if I head upstate - it's enough to find a random mountain, climb it, and look at the trees and lakes. Just getting to know the feeling of a place can be very special.