More than four decades after a large swath of Big Bend National Park was identified as potential wilderness, there's a grassroots effort under way to convince Congress that now is the time to transform it into official wilderness.

Beginning On Tuesday you'll need to pay an entrance fee or show an annual pass to get into Vicksburg National Military Park in Mississippi and Louisiana.

A memory for many Acadia National Park visitors is having jam-smeared popovers and tea or a meal at the Jordan Pond House with its view of "The Bubbles," two mountains beyond the pond. Similar memories for first-time visitors to the restaurant might be altered a bit in the coming years as the National Park Service debates how best to address accelerating maintenance needs with the current facility.

Parks Canada is seeking public input on the next management plan for the Fortress of Louisbourg National Historic Site in Nova Scotia.