都営地下鉄 (Toei Subway) is a major subway system in Tokyo, Japan. It is operated by the Tokyo Metropolitan Bureau of Transportation and consists of four lines: Asakusa Line, Mita Line, Shinjuku Line, and Oedo Line. The system serves as a vital transportation network, connecting various neighborhoods and key areas within the city. The Toei Subway is known for its efficiency and accessibility, making it easy for both residents and tourists to navigate Tokyo. It integrates well with other transportation systems, such as the JR East trains and the Tokyo Metro, providing seamless travel options across the city.