Global aging is one of the challenges for the concept of sustainable development. The particular importance have here the needs of designing the physical environment, especially urban green areas. They have the potential positive impact on the activity and activation of seniors. The tool, which is gaining on popularity is sustainable design, which helps to better meet user needs while taking care of the social and natural environment. The combination of these issues allows to try to specify the main features that should have urban green areas to be called age-friendly.