Louisville, Ky. (WHAS11) - April 19 marks the start of National Park Week, and that's why there is free admission all weekend to the country's 401 national parks.
Local parks participating:
-Abraham Lincoln Birthplace in Knobb Creek
-Lincoln Boyhood National Memorial in Lincoln, Ind.
Many of the parks will also host special events throughout the week.
For more information, visit the National Park Service's website.