This is St. Bartholomew's Cathedral. It was originally built around 1200 and was where all the German emporers were elected.
This is St. Paul's Church where the kings were crowned.
This is the city hall and was originally built in about 1400 (behind the big Christmas Tree). The other pictures were taken in the same area.This is one of the many vendors at the Christmas market. Starting around December 1st, most major cities Germany and Austria have Christmas markets where you can buy hand-crafted ornaments, nutcrackers, etc. (the most famous one is in Nuernburg). All the locals tell me they go there more for socializing and drinking Gluhwein rather than for shopping. Gluhwein is a spiced wine served warm (like cider).