The National Park Service celebrates its 100th birthday in 2016. Marking this momentous occasion the National Park Service will have 16 entrance fee-free days in 2016. Mark your calendar for these entrance fee–free dates in 2016: January 18: Martin Luther King Jr. Day April 16 through 24: National Park Week August 25 through 28: National Park Service Birthday September 24: National Public Lands Day November 11: Veterans Day The fee waiver includes entrance fees, commercial tour fees, and transportation entrance fees. Other fees such as reservation, camping, tours, concession and fees collected by third parties are not included unless stated otherwise. To learn more about the fee-free days and other birthday plans please visit the National Parks Service website.