Ken Burns calls them America’s Best Idea and this Saturday, September 24st, you can indulge in the beauty and splendor of our country’s national parks for free. While there are 395 parks that are free on a daily basis, parks like Joshua Tree in California, the Everglades in Florida or the Badlands in South Dakota (plus a TON more) usually charge an entrance fee that will be waived on Saturday. The occasion is National Public Lands Day, the country’s largest single-day effort to spruce up parks and other spaces. You can enjoy this opportunity to spend a leisurely day at a park, or join in with volunteers to plant trees, repair trails and make other enhancements on public lands. Saturday is also the Worldwide Day of Play, an event encouraging children to get up and get active. The flagship event will take place in Washington, DC, at President’s Park and is hosted by Nickelodeon, the National Park Service and the Nation Park Foundation. Young or old, in the mood to volunteer or take a hike – whatever your outdoorsy agenda may be – click here to find a park near you and take advantage of this free great idea on Saturday.