In this study, the objective has been determined to clarify the following two points with a case study of the Shakujiidai district in the Nerima Ward in Tokyo: 1) relationship between nature experiences and transition of open spaces since the Showa Era, and 2) current actual situation of open spaces and their usage among different generations. With regard to the current situation of nature experiences, elementary school students had sports and activities in relation to trees, grass and flowers, and water. Many responses from respondents in their 20’s and above indicated that they have activities related to trees. As for contents of nature experiences, respondents in their 20’s to 40’s enjoy collection and observation, and those in their 50’s and above mostly enjoy observation. Although details of nature experiences vary according to each generation, trees play an important part when people are exposed to nature. The results of locations indicate that Shakujii Park, which is a large scale “Municipal Park”, “Ward Park” and “Ikoi no Mori” are in use. The average area used for activities was 2,000 square meters and above. “Children’s park” and “ward green areas and green passages” have been found not much in use for nature experiences.
