On Sunday, April 19, all of America's 63 National Parks will be free to enter in celebration of the first day of National ...

It's time for a road trip! From Washington, D.C., to San Francisco, you can visit all the best national parks in the U.S.

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

This advertisement has not loaded yet, but your article continues below. Sarah A. Boardman says that in the six years since she painted the portrait, she has 'received overwhelmingly positive ...