April 19 is a fee-free day at Rocky Mountain National Park and other public lands and sites managed by the National Park Service.

From national parks to iconic symbols of freedom and democracy, these U.S. tourist attractions cannot be missed. America is a patchwork quilt of many different landscapes, cultures and sights ...

While you will be able to get into the parks without paying an entrance fee, NPS notes you may still need to pay a timed ...