National Park Week is coming April 19, offering visitors a chance to see some of the treasured U.S. landmarks for free.

Michael Melford has covered dozens of National Parks during his career with National Geographic. Here he shares tips for how to make your park pictures memorable and stunning. 4 min read ...

It's one of the park's most popular hikes and starts tame with the one-mile Riverside Walk, a wheelchair-accessible hike. After that, hikers will get wet since the trail disappears into the Virgin ...