The National Park Service turns 100 years old in 2016 and wants 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.
- August 25 through 28: National Park Service Birthday
- September 24: National Public Lands Day
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 127 national parks that normally charge an entrance fee.