Livio Vacchini (1933-2007) stands among the most revered architects of his era. His work was defined by an unrelenting pursuit of perfection and a continual interrogation of architecture's fundamental principles. This collection of twelve essays'each focused on an architectural masterpiece, from Stonehenge, the Pyramids of Giza, and the Parthenon to Le Corbusier's Notre-Dame-du-Haut and Mies van der Rohe's Neue Nationalgalerie'continues the effort to share Vacchini's vision and thinking with a broader audience.