I am generally loath to recommend thematic door-stop picture books, but Concrete is the rare exception that warrants some praise. Making an argument for the sheer beauty and physical force of the "brutalist" architecture of poured concrete at a moment when so much of it is under attack and in peril, is a valuable service. This book carries off that task handsomely, pairing large-format images of exceptional international projects divided into categories that illustrate concrete's ability to shape mass, texture, light, and form. Koren's provides a thoughtful personal essay on concrete's underappreciated value.