For another few days there's a light show to be had at Djurgården. It's called "Djurgårdsljus". Between 26 feb - 7 mar several light installations are available. This is one of them. You may recognize the Nordic Museum, but you haven't seen it like this before. I was out yesterday, and I'm going to present some of the installations for those of you who don't have time or possibility to go for yourself, but I urge those of you who can, to do so (but dress warm). You can look here for more info about the event.
Nordiska Museet (map) 4 March 2010