From April 21-29, 2012, during National Parks Week, admission fees are waived at parks that usually have a fee to get in.
For more information about this deal, click here. You'll also find links to discounts at some attractions surrounding the parks.
The offer includes Thomas Edison National Historical Park and Morristown National Historical Park in New Jersey, and Allegheny Portage Railroad National Historic Site, Fort Necessity National Battlefield, Johnstown Flood National Memorial and Steamtown National Historic Site in Pennsylvania.
