Every book in the series follows the same format: 100 chapters, each with a single-page essay and a full-page illustration. What sets this book apart from others in the series is its excellent annotated bibliography.
Weston's 100 entries include architectural features (columns, arches, domes), building materials (brick, iron, steel, glass), and "more idea-like ideas" ('less is more', 'form follows function'). There are also essays on architectural styles, especially the major trends of the twentieth century, though the book's coverage is more technical than aesthetic.