All of America’s national parks will be open to the public for free on 16 days this year to mark the National Parks Service’s centennial.
The first free day will be 18 January, which is Martin Luther King Jr. Day. Parks will have free admission 16 through 24 April for National Park Week, 25 through 28 August for the National Parks Service’s birthday, 24 September for the National Public Lands Day and 11 November for Veterans Day.
There are 409 national parks in the US, 127 of which normally charge an entrance fee. Last year, almost 293 million people visited a national park, according to the NPS.
The NPS has also launched a website for its initiative Find Your Park, which is aimed at helping people find which of America’s parks they would like to visit and centennial celebrations across the country.
Read more: Top 10 US National Parks travel experiences