Midnight sun - Summer activity in Tromso As summer approaches, there's a specific celestial spectacle that waits for in the Polar circle: the Midnight Sun. Tromsø, located in the heart of this mystical region, becomes a phase for this breathtaking phenomenon, where the sun does not set for months, casting an angelic radiance over the city and the bordering landscapes. With Arctic Cruise in Norway, you can study this natural marvel, experiencing it from the land, sea, or in sustainable style.