Did castles change the landscape everywhere in England?

Castles did not change the landscape everywhere in medieval England. While castles were built in many places, they were primarily constructed in strategic locations such as hilltops, near water sources, or along trade routes. These areas offered defensive advantages or controlled important resources. However, there were also regions where castles were less common or even absent. For example, in some densely populated and agriculturally productive areas, castles may have been less necessary, as the land and communities could be defended through other means.