Some advance warning so you can make plans. In celebration of Veterans Day, all 412 National Park Service units (Parks, Monuments, Historic Sites) will be open to the public for FREE on Sunday, November 11. This includes: entrance fees, commercial tour fees, and transportation entrance fees. Other fees such as reservation, camping, tours, concession and fees collected by third parties are not included. The nearest to the metro area is splendid Rocky Mountain National Park between Estes Park and Grand Lake.