Polyarny is a closed city located on the Kola Peninsula in northwestern Russia. It is part of the Murmansk Oblast and has a population of around 18,000 people. Polyarny was established in 1935 and was primarily built as a naval base for the Soviet Union's Northern Fleet. The city is known for its strategic importance, as it is located near the Barents Sea and is home to various military installations. Due to its closed status, access to Polyarny is restricted and requires special permission.