solitary vacations rock. i tagged along w/ a buddy of mine when he went to london to visit his g/f. he had family there so i was able to stay with them and i just took the underground every morning by myself into the city and absorbed the hell out of it. went to some coffee shops and did some writing. it was nice not having the pressure to go sight seeing with family or friends -- it really felt like a choose your own adventure vacation. highly recommended.