This book examines a period which is far more than a prelude to the age of steel and concrete. The first half-century culminated in the bold iron and glass of the Crystal Palace. There follows the creation of the modern styles of the era based on traditions of the past, and finally, in the 20th century, Art Nouveau and the modern architects in their generations - Perret, Wright, Gropius, Corbusier, Mies van der Rohe and others in many parts of the world.