With the radical proposition of life on inclined planes—a theory known as the oblique function—the French architect Claude Parent sought to free architecture of orthogonal form, renew its social relevance, and inspire people’s interest in the built environment.

Oblique Experiments: Claude Parent’s Architectural Installations (1969–1975) explores the significance of a series of temporary interventions that he designed in an attempt to convert his theory into practice. Referred to as practicables, these installations incorporated oblique geometries, involved interdisciplinary collaboration, and made themselves at home in existing buildings, often inside of French cultural centers known as maisons de la culture. Using rarely published archival materials as well as new drawings produced by the book’s author, Oblique Experiments brings overdue attention to this series of architectural experiments with enduring intellectual and creative appeal. Moreover, the book prompts the reader to imagine the radical potential of obliqueness in a range of contemporary practices—beyond the literal prospect of life on sloped floors. As such, Oblique Experiments builds upon Parent’s work in order to imagine new forms of experimentation in architecture, design, and art.