Murmansk is the biggest city north of the Arctic Circle and an ideal place from which to view the northern lights. Additionally, the city is famous for being Russia's only ice-free port. Murmansk cruises typically offer the chance to take guided tours in the city, which stop at important sites like monuments and palaces.
Murmansk is a particularly interesting port for fans of World War II history. Once a hub through which Allied supplies were brought into the Soviet Union, the city boasts a massive war memorial overlooking Kola Bay, plus two other war memorials in town.