Are you dreaming of traveling to a real Christmas experience? then I would recommend a trip to Vilnius, Lithuania. I cannot think of any better place to get into Christmas mode at.
Barcelona. I had not really going back there on my wishlist but then I ended up there and really liked the city. It was a completely different place outside of the tourist season.
Verona is a world heritage and a true beauty in North Eastern Italy worth a stop. It is a perfect city for strolling around in making you feel like you are a character in the Shakespeare play.
The historical city of Cambridge in UK is well worth a city. I would recommend spending a day there to stroll down the streets of the city and just enjoy the scenery like I did last weekend.