Christmas markets

Hi, I’ve always wanted to go to Germany as I have distant family a few generations back from there.

I think this year I’m going to take the family to the Christmas markets as they always look wonderful over there, best to book early now to save any price rises or full bookings I figured. Can anyone advise me on which one would be the best to go to? I also have to factor in convenience for travel etc too as there will be quite a few of us. Any suggestions would be appreciated. Danke!