Krakow and the surroundings are impressive
The Krakow Christmas Market was the biggest and most amazing that I saw during my last Christmas trip. The Town Square are very large so there was enough place for tens of stands. From Krakow one can have a day trip to Auschwitz, a memorial place from the WWII, and a salt mine which is impressive with its "underground city".
Insider Tip:If you leave Krakow by plane, make sure that you leave Krakow very early because the trip takes nearly one hour by bus and since the airport is small, you will probably have to make a very long queue for the security check. Fortunately there is airport staff who helps travellers whose plane is about to take off. Anyway never put yourself in such situation and try to arrive at the airport early.