In honor of the National Park Service's 100th anniversary there will be 16 FEE-FREE days to all National Parks in 2016! Mark your calendars and start planning your visit now. The first fee-free day of the year is January 18th: http://www.nps.gov/findapark/feefreeparks.htm

Though Mammoth Cave National Park is Kentucky's only national park, our state have several NPS sites that are free to visit throughout year including the boyhood home of Abraham Lincoln:http://www.nps.gov/state/ky/index.htm