Which would it be, and why? I've never been to Europe myself - it's one of those parts of the world that I've just not yet had a chance to explore! It's of course somewhere I would love to go one day...my dream is to travel by train and visit as many places as I can there. But if you had to just pick one city for someone who has never been to Europe as an absolute MUST see, which would it be? What makes it such a great city? History? Culture? Food? Friendly locals?