Joseph Knowland State Arboretum and Park
Coordinates: 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.
The park's namesake and principal founder was Joseph Knowland, who served on the California State Park Commission from 1934 to 1960 and was its chairman from 1938. Under his influence, the State of California purchased 453 acres (1.83 km2) for $660,000 on a matching grant basis. On April 30 1948, the property became a State Park.
In December 1949, the park was leased to the City of Oakland with the proviso that Knowland Park would always remain a public park. At this time, a portion of the park became the new site of the relocated Oakland Zoo. Joseph Knowland was honored, on the 101st California State Admission Day, September 9 1951, by the City of Oakland, Alameda County, and the State of California, with the renaming of the park to Joseph Knowland State Arboretum and Park. In 1973, the site was ceded to the City of Oakland, and in 1975, management of the park was granted to the City of Oakland.
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