In the summer of 1999 I took my son on a tour of medieval English castles. To plan the trip I looked at a number of books to decide which castles to visit. This book, written with the sponsorship of English Heritage, describes the different types of castles (e.g.-keep, walled, moated) built throughout the history of England, Scotland and Wales, including where to find the best existing examples of each type. I used the map in the book to plot the locations of these castles, and chose a dozen in London and the surrounding counties to go see. The book was of invaluable assistance--not only in making the selection, but in describing their history and most interesting features. The photography is fantastic. This book was the keystone to a once in a lifetime experience.