Only the best will be listed here! Email me if you feel your site should be included...
The Imperial Household Agency - Official website, which serves as the Imperial Family's website
Genealogy of the Imperial Family
Japanese Government page about the Imperial Family
The 1947 Imperial Household Law (in English, regarding the Imperial Family and the succession)
Dr. J. Taliaferro's (unofficial) Imperial Family of Japan website, with lots of useful links
Japan's Imperial Family (unofficial), with interesting links and articles
Imperial Chrysanthemum Tiara
Japan's Constitution (in English)
Tokyo Imperial Palace - photograph and historical background
Kyoto Imperial Palace - photograph and historical background
Historic sites in Japan
List of links to articles about WW II and Japan
List of links to articles about historical periods and military history of Japan
Full text of the old 1889 Constitution (also known as the Meiji Constitution)
TIME Magazine on Emperor Hirohito (Showa)
The Life of Emperor Hirohito (Showa)
Japan Guide: Outlined, historical overview of Japanese History
Japan Guide: Links to discussions of different periods in Japanese History
Japan Guide: The Samurai and their political role throughout Japan's History
Japan Guide: Explanation of Shinto, Japan's major religion
Japan Guide: Imperial Regalia