Looking to make a trip to Theodore Roosevelt National Park before the summer is over? You should think about going Tuesday, August 25th, because you won't have to pay!

To celebrate the National Park Service's 99th birthday on Tuesday, August 25th, entrance to parks across the country, including North Dakota's Theodore Roosevelt National Park, is absolutely free!

While you won't have to pay an entrance fee on Tuesday, August 25th, not all activities within the park will be free.

To find out what sorts of activities you can participate in on Tuesday, August 25th, check out the Theodore Roosevelt National Park's calendar HERE.