National parks, monuments, battlefields and historic sites will be free to see Monday.
The U.S. National Park Service is offering free admission because it's Martin Luther King Day. Most of the parks charge an admission fee, but some are free to see anytime, including the Martin Luther King Jr. Memorial, the Little Rock Central High School National Historic Site, the Brown v.s Board of Education National Historic Site and the Lincoln Memorial (where MLK gave his "I have a dream" speech).
Visitors may brush up on Civil War history at Vicksburg National Military Park, Fort Sumter National Monument, Manassas National Battlefield Park and the Appomattox Court House, among others, or just do some reflecting and meditating in one of America's most scenic parks, such as Mount Rainier National Park, Shenandoah National Park, Arches National Park or Glacier National Park — just to name a few.
Monday is the first NPS free-admission day of 2015. The next free-admission day coming up is in less than a month, in honor of Presidents Day weekend, Feb. 14-16. Other free days include National Park Week in April, the NPS' birthday in August, National Public Lands Day in September and Veterans Day.
See a full list of parks to visit at Roadtrippers.com.