Tokyu Den-en-toshi Line
History
Due to extensions and line mergers, the Den-en-toshi and associated lines have undergone several confusing renamings.
- July 15, 1927 - The first section of the line from Futako-Tamagawa (then called Futako-Tamagawa-en) to Mizonokuchi opened as the Mizonokuchi Line.
- July 1, 1943 - This section became a part of the Oimachi Line, which ran from Oimachi in southwest Tokyo to Futako-Tamagawa-en.
- October 11, 1963 - The entire Oimachi Line was renamed the Den-en-toshi Line.
- April 1, 1968 - Sections which had been opened incrementally from Mizonokuchi to Nagatsuta were appended to the Den-en-toshi Line.
- April 7, 1977 - A new subway line from Shibuya to Futako-Tamagawa started operation as the Shin-Tamagawa Line. On November 16, 1977, it was connected with through service to Den-en-toshi Line from Futako-Tamagawa. Existing service on the Den-en-toshi Line between Mizonokuchi (and beyond) and Oimachi was maintained.
- August 12, 1979 - The part from Oimachi to Futako-Tamagawa was separated and named the Oimachi Line again, thus restoring its original name and route. This was done to coincide with the inauguration of through service from the Den-en-toshi Line through the Eidan Hanzōmon subway Line (now Tokyo Metro Hanzōmon Line) via the Shin-Tamagawa Line.
- April 9, 1984 - Sections which had been opened incrementally from Tsukimino (beyond Nagatsuta) were appended and the entire length from Shibuya to Chuo-Rinkan was opened.
- August 6, 2000 - the Shin-Tamagawa Line became a part of the Den-en-toshi Line.
- March 19, 2003 - Through service was extended beyond Suitengu-mae with the Tobu Isezaki Line and Tobu Nikko Line.
ja:東急田園都市線