View from highway Reynolds Avenue - South side of highway. Junction of Highway #27 East to communities of Chapmanville, Pa. - Diamond, Pa. - and Titusville, Pa. Photo view from highway driving East. Access to Oil Creek State Park east of highway. The Oil Creek Valley is the site of the world’s first commercial oil well. Oil Creek State Park tells the story of the early petroleum industry by interpreting oil boomtowns, oil wells and early transportation. Scenic Oil Creek carves a valley of deep hollows, steep hillsides and wetlands. Grand Army of the Republic Highway Pennsylvania's 4.5 million acres of public lands include the finest woodlands and natural areas in America. Our name itself means "Penn's Woods" and our public estate is just that, often mountainous and filled with a myriad of creatures, plants and natural wonders. And, what's more - you're never more than 15 minutes away from one of our state parks, state forests or game lands. We invite you to explore all the natural splendor that Pennsylvania has to offer.