Castles of Japan - Dale Kenny lists over 300 castles, and provides a photograph for many of those which survive.
Castles of Japan - Aryn Lickey provides a computer aided montage of how Yonago Castle might have appeared, with a map of its location.
Castles of Japan - Takashi Toyooka offers a location map, brief description, thumbnail photographs and any relevant links for each castle. Select via an interactive map or an index. Bibliography.
The Castles of Japan - ThinkQuest provides an illustrated guide to surviving castles, together with the historic context and design features. Includes a bibliography and simulations of castle-storming.
Gifu Castle - Size of a building, former inhabitant, photo,access information.
Goryokaku - Constructed reason,record of war,size of building.
Guide to Japanese Castles - Eric Obershaw provides a general history and description of castles in Japan, and photographs of castles he has visited, with histories taken from the official brochures and display text.
Inuyama Castle - History, scale, video clip and successive owner.
Shiro: A Japanese Castle - Stephen Wyley discusses the development and aspects of Japanese castles. Drawings by Steven Lowe.
Shurijo Castle - History, draw up a city plan, video and people of castle.
Virtual Tour Himeji Castle - History, map, tour and gallery of photographs of this magnificent timber castle on a stone base, built in 1601 by Terumasa Ikeda - a World Heritage site. By Hakurotowa No Kai.
Wikipedia: Azuchi Castle - An illustrated history and description of this fortress built 1576-1579 by Oda Nobunaga on the shores of Lake Biwa.
Wikipedia: Edo Castle - An illustrated history and description of this castle built in 1457 by Ōta Dōkan in what is now the Chiyoda ward of Tokyo.
Wikipedia: Osaka Castle - An illustrated history and description of this important castle, built from 1583 by Toyotomi Hideyoshi.
