In celebration of Martin Luther King, Jr. Day, Mount Rainier National Park and all national parks, annually waives entrance fees for all visitors. On 16 days in ’16, all National Park Service sites that charge an entrance fee will offer free admission to everyone. Mark your calendar for these entrance fee–free dates in 2016: 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 A variety of park passes are available for purchase online and in parks. There are also passes that provide free admission for people with permanent disabilities and active duty military members and their dependents. All the details can be found here.