Travel involves a lot of sightseeing and I think people watching can come under that heading. I like to observe, maybe over a coffee, from a distance and ponder upon people's lives and their stories. I am not talking about snooping and staring but just taking in the idiosyncrasies of others as they go about their daily chores. Once my coffee is finished, then its back to the the hard core sightseeing...churches and museums. Others may well be watching me as I pass !!!