The book offers a systematic account of Gothic building practice and evolution, tracing how structural innovations such as cupolas, intersecting arches, vaulting, and flying buttresses developed and altered church design, and surveying major cathedral types and regional variations. It treats sculpture and painting, monastic and fortified complexes, military fortifications, and secular constructions including barns, hospitals, townhouses, and civic buildings, organized into thematic chapters with numerous plans and illustrations. The narrative emphasizes causes of stylistic change—material, technical, and social—and largely presents developments from a French perspective while occasionally comparing works beyond France to illustrate influence and variation.