The symmetrical concrete and oya building, which combined Eastern and Western architecture, was demolished in the late '60s to make way for a high-rise building, leaving few physical remnants of the building.

Tours run twice each day except on Sundays, Mondays and public holidays. Reservations are recommended, and can be made through the Imperial Household Agency's website (note: visits and advance applications have been temporarily suspended to prevent the spread of new coronavirus infection.