ridley creek state park is a pennsylvania state park in edgmont, middletown and upper providence townships, delaware county, pennsylvania in the united states. the park, about north of the county seat of media, offers many recreational activities, such as hiking, biking, fishing, and picnicking. ridley creek passes through the park. highlights include a paved multi-use trail, a formal garden designed by the olmsted brothers, and colonial pennsylvania plantation, which recreates daily life on a pre-revolutionary farm. the park is adjacent to the john j. tyler arboretum. ridley creek state park is just over from downtown, philadelphia between pennsylvania route 352 and pennsylvania route 252 on gradyville road.