The present work is a valuable contribution to the study of Muslim architecture in Bihar. It is divided into four volumes dealing with medieval towns of Bihar. The present one deals with "Patna and Biharsharif - 12th to 19th century AD". in this volume, Dr. Abha Rani's work has critically analysed the design and execution of most of these buildings of Patna and Biharsharif. She has also described their decorative pattern and architectural excellence.