Looking to learn more about Gettysburg National Military Park than what your guidebook says? Consider joining a ranger for a walking tour this summer of some of the park's most hallowed sites.

A grizzly bear that emerged from a thicket and charged two backpackers in the backcountry of Denali National Park and Preserve was shot and killed by one of the two who was carrying a .45-caliber semi-automatic pistol, according to park officials.

Memorial Day will see thousands of people converging on the National Mall. Many will visit the Vietnam Veterans Memorial and its iconic deep-vee black marble wall bearing the names of more than 58,000 American casualties.

Ask most camping families to name national parks in the Southeast, you'll likely hear about Great Smoky Mountains National Park in North Carolina and Tennessee, Shenandoah National Parks in Virginia, and the Everglades in Florida. Most people have never heard of Congaree National Park in South Carolina. And that's not too surprising when you consider that little more than 122,000 folks visited the park last year.