Butterfly Park, Urban park in South Portland, United States.

Butterfly Park is a one-acre park at 7720 South Macadam Avenue, with a natural area and walking paths near the Willamette River. At the entrance, a rock garden beside an interpretive sign holds columbines, penstemon, fireweed and other flowering plants. The vegetation, once dominated by Himalayan blackberries, now includes native grasses, wildflowers and dogwood.

It took about ten years to organize and develop the park on what was then a derelict patch of land beside the Macadam Bay Club, a residential houseboat community. The South Portland Neighborhood Association worked with Portland Parks & Recreation to complete the work. The site, once dominated by Himalayan blackberries, now holds native grasses, wildflowers and dogwood.

The park serves as a learning space where visitors observe butterfly species like mourning cloaks and orange sulphurs in their natural surroundings. The wildflowers and native plants draw these insects, making it a place where people notice the local natural world firsthand.

The entrance is at 7720 South Macadam Avenue, where a rock garden and an interpretive sign stand. The Greenway Trail, part of the 40-Mile Loop, runs through the park and links it north to Miles Place and Willamette Park and south to Willamette Moorage Natural Area, the Sellwood Bridge and Powers Marine Park. A bench along the trail faces Ross Island.

The park was formerly a derelict patch of land beside the Macadam Bay Club, a residential houseboat community. The South Portland Neighborhood Association worked with Portland Parks & Recreation for about ten years to organize and develop it. The Greenway Trail, part of the 40-Mile Loop, links the park to Willamette Park north and the Sellwood Bridge south.