The National Park Service and Acadia National Park turn 100 in 2016, and in celebration, the National Park Service announced that there would be 16 admission free days in 2016.

The free admission days include:

  • 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

In addition, to these days, the National Park Service offers free admission to active duty military personnel, citizens with permanent disabilities and any 4th grade student through the "Every Kid In a Park" program.