The organisation was based upon the Royal Institute of British Architects and the group met regularly, sponsored lectures and produced Japan's first architectural journal.

[2] Other than the Bank of Japan building, the structure most closely associated with Tatsuno in the later stages of his career is undoubtedly the Marunouchi facing side of Tokyo Station.

The broadly Neo-Baroque design completed in 1914 is distinctive for its use of extensive steel framing and red brick with ribbed domes crowning the north and south wings of the structure.

[9] Much of the original steel framing was imported from England and the sturdiness of the design enabled the structure to survive both the Great Kantō earthquake in 1923 as well as wartime bombing and fires in 1945.

His connection with construction companies such as Okada Engineering, the Association of Japanese Architects (Nihon Kenchiku Gakkai 日本建築学会) or through the new Journal of Manchurian Architecture (Manshu kenchiku zasshi 満州建築雑誌), helped insure that a particular architectural style — that popularized by Tatsuno, sometimes called the Tatsuno style (辰野式)— initially became the standard throughout Japanese Manchuria.

[citation needed] On 14 May 2021, 136795 Tatsunokingo, a sizable near-Earth object and potentially hazardous asteroid which was discovered by astronomer Takashi Hasegawa at Kiso Observatory in 1997, was named by the Working Group for Small Bodies Nomenclature in his memory.