Tokyo Metro Ginza Line groundbreaking

Groundbreaking for the Tokyo Metro Ginza Line occurred on June 15, 1914, under the direction of engineer Noritsugu Hayakawa. This 2.2 km underground route between Ueno and Asakusa introduced electric multiple-unit trains to Japan and addressed severe urban congestion in Tokyo. Built with cut-and-cover methods amid earthquakes concerns, it featured innovative ventilation and safety systems. The line opened in 1927 and became the model for Japan's extensive subway networks. It symbolized Japan's rapid modernization and commitment to efficient public transit, influencing post-war urban planning and high-speed rail development.