On Sunday, April 19, all of America's 63 National Parks will be free to enter in celebration of the first day of National ...

From the adorable but deadly pine marten to the massive sperm whale, get to know some of the amazing animals that call ...

I visited all the major US national parks and ranked them based on factors like beauty and crowd size. My favorites include ...

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The striking image from the International Space Station captures the rain shadow effect, where a part of a mountain range is ...

Our national parks host millions of people a year, sustain countless species, and safeguard some of the most breathtaking landscapes on the planet. They preserve natural and cultural resources ...

Take a look at 10 of the best national parks to visit this season. (Getty Images)| California With park temperatures rising well into the triple digits in the summer months, Death Valley National ...

Robyn Beck/AFP via Getty Images "Gates will be locked ... But according to the D.C. tourism website "open-air national parks" like the National Mall and Rock Creek Park remain physically ...