Global InformationJoseph Knowland State Arboretum and Park information
37°45′19.12″N 122°8′17.78″W / 37.7553111°N 122.1382722°W
Joseph Knowland State Arboretum and Park is a park located in the Grass Valley neighborhood of Oakland, California. It was formerly a state park, and is now the property of the City of Oakland. The Oakland Zoo occupies the developed western lowlands of the park, just off I-580.