'A must-read for architects in practice or education that brings home the sustainable reality of technics of physics that first matured during the 19th Century, a reality that, with electronic assistance, still bears environmental fruit today. Vidar Lerum digs deep to shed light on the performance attributes of landmark buildings now more fully discovered.' - Colin Porteous, Professor of Architectural Science, Mackintosh School of Architecture, Glasgow‘This book should be compulsory reading for all students of architecture and environmental systems engineering. By means of a unique combination of 19th Century and 21st Century case studies, Vidar Lerum convincingly demonstrates that the techniques often used in contemporary exemplar buildings for the improvement of energy efficiency were first tested in monumental buildings about 150 years ago. The modern case studies provide an incredibly detailed resource of information for all those seriously interested in Sustainable Design.’ - Dr Neil S. Sturrock, Chairman of CIBSE Heritage Group, Senior Lecturer in Building Energy Studies, Liverpool John Moores University (1971-2012)"The book is beautifully put together with outstandingly good colour photography, clear line drawings and reproductions of original design drawings." – Peter Swallow, Building Engineer