Local parks offer outdoor spaces for active play; they provide a common attractive space in which grandparents and grandchildren can interact and engage in physical activity. This study investigated how multigenerational active spaces within local parks were being used by older people, their grandchildren, and other age groups. Method: This study was an observational design using direct observations of park visitors over three consecutive months and an intercept survey of a subsample of older visitors in six community parks in Victoria, Australia. The number of visitors, activity interaction, type of accompaniment (e.g., intergenerational, family, group), and physical activity level were recorded and reported descriptively. Results: A total of 5,373 visitors were observed with 43.3% (n = 2,327) children and 10% (n = 537) older people. Most visitors attended with company (55.9%–97.7%), with older people’s most common accompaniments being intergenerational groups (n = 164, 30.5%). Within the observed intergenerational instances, 35% were older people and 45.1% children. Most people from all age groups were observed to be physically active (≥78%). Survey respondents (n = 48) reported attending the park alone (47.9%) or with company (e.g., 22.9% grandchildren, 12.5% a partner/friend). Approximately a third of respondents reported exercising with their grandchildren in the designated space. Discussion: A large proportion of older visitors were observed with intergenerational accompaniment in local parks, with most grandparents and their grandchildren observed to be physically active. The active spaces, which include multigenerational outdoor equipment, may be an attractive setting for both children and older adults to foster intergenerational interaction and engagement in physical activity.