SEATTLE (AP) — To honor the National Parks System’s 103rd birthday, both it and the Washington State Parks system are giving free admission, including Olympic National Park.

Single-day visitors to any state park on Sunday, Aug. 25, won’t need a Discover Pass to park.

The pass costs $30 a year or $10 a day. The 2011 law that created the Discover Pass system also directed the state parks system to offer as many as 12 free days per year.

After Sunday, two free days remain in 2019: Saturday, Sept. 28, which is National Public Lands Day, and Monday, Nov. 11, Veterans Day.