Osaka Municipal Transportation Bureau Subway System
- Design Section of the Special Railway Construction Department of the City of Osaka
- Osaka is known for its rivers and canals that roughly divide the city into two halves, as the division encouraged a tandem growth of centers. On the northern half is Umeda with the Osaka Terminal Station and its downtown district, and on the southern half is Namba with a corresponding railroad station and shopping center. Wherein, by the 1920’s, there arose a need to better connect the two centers along the Mido-suji Boulevard. The underground subway system was combined with the Mido-suji widening project in 1925, and the construction of the Mido-suji subway line began in 1930. As the subway was dug deep underground to cross the rivers, it effectively made possible for the stations to be designed with large high-ceilinged barrel vaulted spaces.
- 1933年：梅田〜心斎橋間 1935年：心斎橋〜難波間 （1933年淀屋橋駅、1934年心斎橋駅、1935年梅田駅。）