rapid transit systems in the world, the Moscow Metro, the fourth-largest. Espoo 2, helsinki 145, hyvinkä 1, kokkola 2, kouvola 1, kuopio 3, oulu. Bryansk 1, ekaterinburg 11, kaliningrad 1, kazan 4, kiev 1, krasnodar 1, moscow 516. The city is well known for its architecture, particularly its historic buildings such as Saint Basils Cathedral with its brightly coloured domes. Moscow is the seat of power of the Government of Russia, being the site of the Moscow Kremlin, a medieval city-fortress that is today the residence for work of the President of Russia. Sochi 17, tolyatti 1, tula 1, ulan-Ude. 85 Great Portland Street, London W1W 7LT, United Kingdom All rights reserved! Moscow is the capital and most populous city of Russia, with.2 million residents within the city limits and.8 million within the urban area.