[1] The museum's gallery moved to Meiji Seimei Kan in Marunouchi in Chiyoda, Tokyo in October 2022, but the foundation continues to operate and manage its collection in its former building in Setagaya.

[3] In 1992, in commemoration of hundredth anniversary of the founding of the Seikado collection, this museum galleries were opened to the public.

[3] The Seikado Bunko Museum houses 200,000 classic books and 6,500 East Asian cultural artifacts.

As of September 2023, the Japanese government has designated 7 of these items as National Treasures and 84 as Important Cultural Properties.

[2] At a high level, the collection includes books and calligraphy, paintings and prints, lacquer art, ceramics, tea ceremony utensils, stationary and infusion tea utensils, swords and swords furniture, Buddhist sculptures, and archaeological objects.