We will promote the construction of a system enabling online availability of collection-related material from six metropolitan museums (Edo-Tokyo Museum, Edo-Tokyo Open Air Architectural Museum, Tokyo Metropolitan Art Museum, Tokyo Metropolitan Teien Art Museum, Tokyo Photographic Art Museum, and Museum of Contemporary Art Tokyo) as well as the expansion of public access to this material. We will operate “Tokyo Museum Collection (ToMuCo)”, a database enabling cross-searches of material and works in these collections. In addition, we will digitize collection material and valuable resources and make their 3D data available online.