Throughout the month of November, there is a thing called The Lights of Uppsala going on throughout town. It basically consists of brightly colored lights in different places. I guess it has been going on for a few years now. I think the idea is that November is the darkest and dreariest month, because the days are getting longer and there is no snow yet. So the lights make things nicer and keep people from getting (too) depressed.
Here are some photos I took (with my small camera (meaning I have little to no control over how they turn out)) one evening.