It's even better at night (the train station and the pyramid carousel)!
Landlady Uschi gave me a newspaper clipping that gives the following trivia re: the lighting for Hannover's Christmas Market: the light sets cost 105,000 Euro ($122,871); the electrical cost is 11,000 Euro ($12,872); and there are 20,000 light bulbs.
We'll go back, of course. There's Glühwein (warm wine) to drink, Lebkuchen and Spekulatien (gingerbread and "windmill" cookies) to eat, the 30-minute Marktkirche light show to see (inside), and another long street behind the train station of popular Advent sites/sights (not sure what that means). The week is young but it will be so quickly over.
Diem Noctem is in order!