National Diet Library

The National Diet Library|国立国会図書館|Kokuritsu Kokkai Toshokan is the only national library in Japan. It was established in 1948 for the purpose of assisting members of the Diet of Japan/国会|Kokkai}} in researching matters of public policy. The library is similar in purpose and scope to the U.S. 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 on the Wikipedia page

The website is (English) and  (Japanese).