Mark your calendars. The National Park Service has announced 16 days in 2016 that you can visit a park for free. 

The generosity is being extended as a way to commemorate the agency’s 100th birthday. It was 44 years after President Theodore Roosevelt created the first national park at Yellowstone, President Woodrow Wilson designated the National Park Service in 1916.

Today there are 450 natural, historical, recreational and cultural areas throughout the United States, its territories, and island possessions that encompass the National Park Service.

Every park including Utah’s Craters of the Moon National Monument will be free on the follwoing 16 entrance fee-free days in 2016:

  • January 18 –Martin Luther King, Jr. Day
  • April 16-24 –National Park Week
  • August 25-28 –National Park Service Birthday Weekend
  • September 24 –National Public Lands Day
  • November 11 –Veterans Day