The Moscow Metro is a rapid transit system serving the city of Moscow, Russia. Opened in 1935, it is one of the busiest metro systems in the world, with over 9 million passengers daily. The network consists of 14 lines and more than 230 stations, known for their ornate architecture and artwork. The metro covers a vast area, making it an essential mode of transportation for residents and visitors. Trains run frequently, and the system is known for its efficiency and cleanliness. The Moscow Metro also features unique designs, with many stations resembling underground palaces.