Parkers Woods and Buttercup Valley Nature Preserve Located in the Northside neighborhood of Cincinnati, Ohio, Parkers Woods and Buttercup Valley Nature Preserve form a contiguous green space of approximately 89 acres connected by natural hiking trails. The two are part of the City of Cincinnati Parks system. Buttercup Valley was donated to the Cincinnati Park Board in 1973 by the Greater Cincinnati Tree Council. The park entrance is located at the east end of Stanford Drive with additional trail heads at the east end of Northview Ave. and north end of Langland St.