The Eisenhower National Historic Site is located adjacent to the southwestern boundary of the Gettysburg National Military Park. The site includes nearly 700 acres of bucolic farmland, meadows, pastures, riparian areas and oak-hickory forest. Two streams, Marsh Creek and Willoughby Run, traverse the park and provide habitat for a wide variety of plant and animal species. This small park has been designated as a Pennsylvania Important Mammal Area for it's populations of the least shrew (Cryptotis parva), a State Endangered mammal. Additionally, the park is included in the Important Bird Area designation because of its habitat for loggerhead shrikes, short-eared owls, and upland sandpipers.