Saguaro cactuses are Arizona's towering icons. However, only one holds the record for being the tallest ever measured. Here's what to know about it.

Since its founding on August 25, 1916, the U.S. National Park Service has assembled 419 protected units, of which 62 hold the ...

National Park Week has been a celebratory time to enjoy, learn about, and explore the many national parks within the United ...

Beyond April 19, additional fee-free days are scheduled for later in the year, including June 19 (Juneteenth), August 4 ...

Astronomy-lovers should head to this incredible stargazing destination in the American West full of Dark Sky locations, ...