From April 16 to 24, 2011, the U.S. National Park Service will offer free admission to its 394 park sites. Grab your camera and explore a park (or two). Upload your pictures to NG Kids My Shot with the tag “Park Week.” Your photo might be featured in a gallery of the best park images.

In the meantime, click through U.S. National Parks pictures and get inspired to capture images of your own.

Also, check out the Most Visited Parks photos.

Photograph by David Yegerlehner, My Shot