This guide investigates the historical and architectural evolution of England and Wales's most significant ecclesiastical structures. Author Henry Thorold utilizes his extensive knowledge of regional history to categorize and analyze the monastic and cathedral sites across every diocese, providing a structured examination of their structural development and aesthetic significance.

The text serves as a dense, scholarly reference for those interested in the ecclesiastical heritage of Britain. Its systematic approach provides a clear framework for understanding the complex architectural legacy of these historic sites.