Book excerpt: Structural analysis of architectural heritage is a new and growing branch of engineering. Knowledge of the history of architecture, material characteristics, instruments and techniques for investigations, diagnosis and restoration are all vital aspects for the correct understanding of structural behaviour and the ability to make correct decisions for repair and strengthening techniques. Designed for use by all professionals involved or interested in the preservation of monuments, the purpose of this book is to contribute to the development of new approaches in the area. Many of the examples examined, including the Colosseum, the Tower of Pisa, the Pyramid of Chephren, the Tilla Kari Mosque in Samarkand, the temples of Angkor and Konarak, the Santa Maria Vieja Cathedral, the domes of St Peter, Hagia Sophia, the Pantheon, St Ignatio de Loyola and St Charles, are the result of projects and studies carried out during Giorgio Croci's distinguished career. The book features numerous black and white photographs and illustrations by the author.