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LOUISVILLE, Ky. (WDRB) — If you're off work for Martin Luther King Jr. Day, you might want to visit a national park. 

The National Park Service is offering free admission at all of its sites that charge an entrance fee — more than 100 parks — on Monday, Jan. 20, in honor of MLK Day. 

Admission is also free on Veterans Day and April 18, the first day of National Park Week. For additional information, visit the National Park Service's official website

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