It is easy to see it in higher latitudes in Norway but not very often in Trondheim position. I wanted to take a picture where I can see the city as well. On 12th of september the aurora index was so high and it was very nicely visible over Trondheim as well. the tower in the left side of the picture called Ttyholt tårnet which has a rotating restaurant in top. From there you can see almost entire city.