The National Diet Library (NDL) (国立国会図書館, Kokuritsu Kokkai Toshokan) is the national library of Japan and among the largest libraries in the world. It was established in 1948 for the purpose of assisting members of the National Diet of Japan (国会, Kokkai) in researching matters of public policy. The library is similar in purpose and scope to the United States Library of Congress. The National Diet Library (NDL) consists of two main facilities in Tokyo and Kyoto, and several other branch libraries throughout Japan. More information...
According to PR-model, ndl.go.jp is ranked 83rd in multilingual Wikipedia, in particular this website is ranked 5th in Japanese Wikipedia.
The website is placed before time.com and after en.wikisource.org in the BestRef global ranking of the most important sources of Wikipedia.