National parks in the United States offer visitors an affordable way to see some of the most beautiful environmental landscape in the country. From the nation's most visited park, Smokey Mountain National Park (to the right), which had almost 10 million visitors in 2007, to Maine's Acadia National Park, these parks offer single or multiple-day getaways for you and/or your family.
All national parks contain picnic grounds and camp areas, along with nature trails and other attractions. For more info on as well as pictures of the 10 most visited national parks, check out this slide show from The Daily Green. These natural beauties are certainly worth preserving through the green practices that we discuss on this blog.