This statue is called “Kopparmärra” which translated to English would mean “copper mare”. The king on the horse is Karl IX and he was involved in the founding of the early Gothenburg. Moreover, this is a very popular meeting place for the citizens of Gothenburg and I think it is even nicer when it is irradiated by the greenish light which is also part of christmas-light project this year.
PS. I think the shadow makes an dramatic effect. DS.