This French-language nonfiction work examines how architecture can better respond to the needs of older adults in residential and institutional settings. Drawing on topics such as housing design, home automation, accessibility, and care environments, it considers the relationship between built space, independence, safety, and daily support for aging populations. The study is situated within a European context and addresses both private or semi-private habitats and residences designed for long-term care. The book is useful for readers interested in the practical and social dimensions of age-friendly architecture, including planners, architects, caregivers, and professionals involved in designing or evaluating living environments for older people. Its bibliography and 270-page scope suggest a research-oriented treatment rather than a purely popular overview.