Stockholm is beautiful in every season. I used to hear his all the time during my staying in Sweden. I would complete that it is even more beautiful if seen from above.
There is a place in Stockholm called Katarinahissen that can be reached either by climbing a lot of old wooden stairs or by using the elevator. The last time I was in Stockholm, I used the stairs. A bit tiring, but worthy.
And so is how Stockholm looks like from above. Amazing!