T hrough Sunday, August 28 you can get FREE National Park entrance in celebration of their 100th birthday. The National Park Service turns 100 years old in 2016 and we want everyone to join the party! On 16 days in '16, all National Park Service sites that charge an entrance fee will offer free admission to everyone. 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 National parks are America’s Best Idea, and there are more than 400 parks available to everyone, every day. The fee-free days provide a great opportunity to visit a new place or an old favorite, especially one of the 124 national parks that normally charge an entrance fee . The others are free all of the time. Plan your visit and enjoy our country’s history and nature. The fee waiver includes entrance fe