I've visited all 63 major US national parks. I think Great Smoky Mountains and Grand Canyon are some of the best parks for beginners.

I visited all 63 major US national parks and have found that some are best for first-time travelers.; Great Smoky Mountains and Death Valley have scenic overlooks that are accessible by car.

The 10 most overcrowded US national parks — and the quietest time to visit each one. Ben Cost. Fri, ... Rocky Mountain National Park. VW Pics/Universal Images Group via Getty Images.