Tamagawa Line
On March 6, 1907, the opened the first section of the tramway (not to be confused with today's Tokyu Tamagawa Line) between Shibuya and what is now Futako-Tamagawa, using gauge. The branch from Sangen-Jaya Station opened on January 18, 1925, and was split off into the present Tokyu Setagaya Line in 1969. The underground portion was built in 1977, as a separate line (called the Shin-Tamagawa line), which was eventually merged in 2000.