Founder of Superstudio and initiator of the so-called 'Radical Architecture' movement (one of the most important avant-garde movements of the sixties and seventies), Adolfo Natalini describes years of designed and constructed architectural projects through his preferred media: drawings and sketches shown in his Black notebooks (Quaderni Neri). This book contains many of his numerous designs and constructed projects, witness to almost fifty years of his career, collected in four new Notebooks. The first section describes the experiences shaping Natalini's education, including his studies and work at Superstudio and the 'Pistioia school'. The other chapters present his designs and completed projects, divided by geographic area and then in chronological order. The Italian, German and Dutch sketchbooks show the work he considers the best representations of his career, told through images, technical drawings and original sketches from his famed sketchbooks. Many excerpts from interviews with the Natalini are interspersed throughout, complementing and tying everything together. This significant book helps us understand a key player in Italian architecture, his career, how his ideas evolved, and how he sees and understands his work and designs.