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

Each April, the National Park Service celebrates National Park Week with daily programming and special events. This year, the ...

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

While choosing the best is "nearly impossible," travel guide publisher Lonely Planet had some recommendations.