Midnight sun - Summer activity in Tromso As summer season strategies, there's a certain celestial phenomenon that awaits in the Arctic Circle: the Midnight Sun. Tromsø, situated in the heart of this mystical region, becomes a stage for this breathtaking sensation, where the sun does not set for months, casting an aerial glow over the city and the surrounding landscapes. With Arctic Cruise in Norway, you can study this natural wonder, experiencing it from the land, sea, or in sustainable style.