If you needed a good reason to get out and explore Arizona, Saturday may be the day to do it.
Entrance fees at all national parks and forests -- including the Grand Canyon, Petrified Forest and Saguaro national parks in Arizona -- will be waived.
It would normally cost $35 to visit the Grand Canyon.
According to the National Environmental Education Foundation , the day is a big volunteer day for parks and public lands, but also comes with waived entry fees. Not all fees are waived with park activities .
National Public Lands Day falls on the fourth Saturday in September each year.