Rome
There was one famous sight that eluded me. All through Rome, I'd been trying to find that famous square with the fountain that appears in all the classic movies. You know the place where, in every movie ever made, the hero and heroine rush through the square causing a thousand pigeons to take flight in a mad Hitchcockian beating of wings. I never did find it, partly because I only had a couple of days to explore Rome and partly because it turned out to be St Mark's Square, which is actually in Venice. I do hope you're not reading this book for the travel tips.