We've got Yellowstone right here, but there are 399 other National Parks you may not have explored yet. The National Park Service offers lots of free ideas for making the most of a trip to our national parks.
National parks throughout the country will commemorate Martin Luther King, Jr. Day on Monday, Jan. 18. All national parks will provide free admission and many parks will host special events or volunteer service projects. Details here:
There is one more day in 2014 where all 401 National Parks will waive entrance fees. Your last free day this year is coming up on November 11 (Veterans Day). The National Park Service has just announced 9 entrance fee-free days for 2015. Get the schedule here so you can mark your calender!