There's nothing like actually walking the ground where enemies contended to bring powerful insight to a ranger or historian-led battlefield tour. No one does these better than the Civil War Trust—especially when they roam unprotected acres of hallowed ground that only inspired action can preserve. This weekend is your chance for that insight at Gaines' Mill where the trust is working to quadruple the protected battlefield.

Just because "cave" is part of Wind Cave National Park's name, that doesn't mean the only thing you can do at this South Dakota destination is go underground.

In a move to help the National Park System become more fuel efficient, the National Park Service and U.S. Department of Energy are partnering to bring alternative fuel vehicles to the parks.

Acadia in 1919 became the first national park east of the Mississippi. Thanks to people with a passionate love for the beauty of Mount Desert Island— and its cool summers (at least compared to inner-city Boston and New York City)— the jewel dubbed “MDI” was spared from rampant development.