While for many architects, drawing is a functional tool in the development of specific building projects, visionary British architect Sir Peter Cook has used the medium throughout his long career to channel his boundless imagination. From those made in the 1960s at Archigram to the present day, Cook's colourful, highly detailed images resonate beyond the architectural sphere, as seen in his major solo exhibition at the Louisiana Museum of Modern Art, Denmark in 2022. Cook's work pushes the boundaries of architectural norms of design and construction, with the freedom to imagine buildings, communities and cities that are, as he succinctly puts it, 'possible or maybe nearly possible, but importantly, not consciously impossible'.For this book, Cook has selected the 18 projects - 16 drawings, one building and his Serpentine Play Pavilion - that he considers most essential to understanding his creative process. These are accompanied by texts that set them within a historical, cultural andpersonal context. His unorthodox and varied 60-year career is explored further in a conversation with Serpentine's Artistic Director, Hans Ulrich Obrist, that delves further into Cook's personal history, belief systems and creative processes from childhood to the present day.