Kronstadt is a small town in Kotlin Island on Gulf of Finland. So it was a fortress, it has been filled with moat.
The residence of NCCA is located on there. It takes about one and half hour to go to center of St.Petersburg by Marshrutka(k-405) and subway.
By the way, color of the light was really like this photograph. It was the first time for me to see such a blue world.