Come celebrate Rock Creek Park's 119th birthday and Public Lands Day! The park was founded on September 27, 1890. There are fun activities for all ages all day at the Rock Creek Nature Center and Horse Center, 5200 Glover Road, Washington, DC 20015, including hikes, educational programs, pony rides, and a sneak peek at the new Ken Burns film called "The National Parks: America's Best Idea." For a complete schedule of events, visit the Rock Creek Park website.