When: Sun., Aug. 25, 9 a.m.-6 p.m. 2013
It's Founders Day! The National Park Service was founded August 25, 1916. All Park Service properties are free today across the US. 1:30pm Complimentary birthday cake. All day: screening excerpts of Ken Burns' "The National Parks" documentary. Tours, historic weapons demos, and more.
Price: Free and open to the public