This year marks the 175th anniversary of Fort Scott, which was established in the Kansas Territory in 1842. In commemoration of this momentous occasion, Fort Scott National Historic Site is pulling out all the stops with frontier-era military reenactments on Saturday.

President Trump's decision Thursday to have the United States exit the Paris Accord on climate change sent shivers through the nation's conservation community, but it remained to be seen how that action might impact the National Park System.

With the icy grip of a late-spring snowstorm finally melting away, Trail Ridge Road in Rocky Mountain National Park has opened for summer.

Over the past decade, the once-gleaming white marble dome of the Thomas Jefferson Memorial has taken on a decidedly undignified appearance. Creeping over the dome’s surface (as well as the monument’s signature columns and Greek-revival pediment) is a black substance known as biofilm, giving a grimy look to this monument to the third president.