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Wissahickon Valley

Wissahickon Valley
Wissahickon Valley. Photo by L. Kolakowsky Smith.

Located within Fairmount Park, the Wissahickon Valley is a symbol of natural area preservation within a vast urban complex. The site provides value in the study of natural landscape evolution from late Tertiary times to the present.

Location: Philadelphia County, PA

Year designated: 1964

Acres: 1,250

Ownership: Municipal

For additional information see:


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Please remember, National Natural Landmarks (NNLs) are not national parks. NNL status does not indicate public ownership, and many sites are not open for visitation.

Last Updated: June 28, 2012