You can get maps with the extent you require. "Extraction App" provides maps through the web application. "WMS" helps GIS users.
For WWW map applications.
This service uses Fundamental Geospatial Data published by Geospatial Information Authority of Japan (GSI) with its approval under the article 30 of The Survey Act. (Approval Number ZYOU-SHI No.1028 2015)
This map is the copy of 1:20000 Formal Map published by Geospatial Information Authority of Japan (GSI) with its approval under the article 29 of The Survey Act. (Approval Number ZYOU-FUKU No.1224 2015)