O'Neill Regional Park is a beautiful 4,500 acre park managed by Orange County Parks. The park is nestled in the foothills of the Santa Ana Mountains in Trabuco and Live Oak Canyons. Coast live oaks line many of the trails allowing you to enter a wooded wonderland. There are also trails of chaparral, sagebrush and cactus. Live Oak Canyon Road is also a lovely drive as you enter the park. This is an OC must for relaxation.