In 2005, DesignTide took place at shops, museums and art galleries throughout Tokyo's design-centric districts, including Aoyama and Harajuku, Daikanyama, Marunouchi and Roppongi.
The building is a miniature of the Marunouchi station building of Tokyo Station, with its brick built by Japan Brick Company.
Its largest concentration of assets is around the Marunouchi and Otemachi districts west of Tokyo Station, an area purchased by the zaibatsu from the Meiji government in 1890 and developed into an office district.