The Moscow Metro was opened in 1935 with one line and 13 stations, it was the first underground railway system in the Soviet Union. Currently, Moscow Metro has 182 stations. Its route length is 301.2 kilometres. The system is mostly underground, with the deepest section located at 84 metres below ground.
The Moscow Metro is the world's second most heavily used rapid transit system after Tokyo's twin subway.
The first plans for a metro system in Moscow date back to the times of the Russian Empire. These plans were postponed by World War I, the October Revolution and the Russian Civil War. It was not until June 1931 that the decision to start construction of the Moscow Metro was taken by the Central Committee of the USSR Communist Party.
The first lines were built under the Moscow general plan designed by Lazar Kaganovich in the 1930s, and the Metro was initially (until 1955) named after him ("Metropoliten im. L.M. Kaganovicha").
The builders of Moscow Metro consulted with their colleagues from the London Underground, the world's oldest metro system. Partly because of this connection the design of Gants Hill tube station, although not completed until much later, is reminiscent of many stations of the Moscow Metro.