Understanding the underlying factors that influence older people towards healthy lifestyle and physical activity is essential to planning healthy communities. In her PhD thesis project Tiina Rinne (nee Laatikainen) addressed this highly topical theme. While older citizens are particularly prone to the characteristics of their living environments, the research on built environments promoting physical activity among older people has been underrepresented in arenas shaping the future environments, such as, within urban planning. People’s relationships with the surrounding environments are formed through an active interaction with it through the whole life course, and at the same time the environment may either actively support or discourage personal attempts. Temporally and spatially unique everyday physical, social, and cultural environments shape this development. In ActivAGE we aim to further define critical characteristics of physical, social and cultural environments that contribute in helping older people being physically active within their everyday lives. A transactional person-environment view, where person-environment relationship is seen as a dynamic, interactive system works as a basic framework for this place-based study. The research is conducted using the concepts of personal projects, affordances and accessibility together with a public participatory geographical information system (PPGIS) approach.