O'Brien Park is a beloved 10.7-acre park located on Mainstreet in downtown Parker, serving as a vibrant community focal point. It features an iconic historic gazebo, which is a popular backdrop for events and photos, and a fantastic, recently renovated universally accessible playground. The park also includes a lighted softball field, basketball court, and the popular H2O'Brien outdoor pool with slides. With public art installations, picnic areas, and connections to local trails, it's a diverse and engaging space for all ages, hosting many town events.