This website is filled with alot of information about Medieval Castles, from how and why they were built to what they children did and even a lot more in the middle. http://www.medieval-castle.com/
More answers to castle questions you may have, such as, why did they stop making castles? http://www.castles-of-britain.com/castlelearningcenter.htm
Describes the history, purpose, and construction of medieval castles and the life of their various inhabitants.
Text and cutaway illustrations depict how people lived and worked inside a medieval castle.
There are many more books at our library. Go to Destiny Quest and do a search for medieval castles