Simultaneously a seat of government, a military base, a private residence, and a retreat for besieged locals, the medieval castle abounds in both history and romance. This evocative survey traces the rise of fortresses across England and Wales, with 200 photographs, drawings, and plans. Sites include York Castle, Conway Castle, Dover Castle, and Kenilworth Castle. Unabridged republication of Military Architecture in England During the Middle Ages, originally published by Oxford University Press, London, 1912.
Here's a sample of other books in this Dover category
Castles: Their Construction and History by Sidney Toy Concise, scholarly survey traces castle development from ancient roots. Nearly 200 photographs and drawings illustrate moats, keeps, baileys, many other features. Caernarvon, Dover castles, Hadrian's Wall, Tower of London, more. 199 black-and-white illustrations.
Castles of the Western World: With 240 Illustrations by Armin Tuulse Exhaustive, painstakingly researched study of more than 200 ancient structures — from temples, palaces, and walls of ancient Egypt, Greece and Rome, to lavish palaces built in Italy, France, England, Germany, Austria, and Scandinavia.
Castles and Warfare in the Middle Ages by Eugene-Emmanuel Viollet-le-Duc, M. Macdermott Profusely illustrated, detailed descriptions of dungeons, keeps, battlements, and drawbridges, plus artillery, trenches, battering rams, more. "Will enthrall anyone interested in architecture, military, or medieval history." — History in Review.