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

See the fruits of spring in the vibrant blooming flowers! The Desert Botanical Garden has a new indoor exhibit that features endangered and rare orchids.

The Great Smoky Mountains National Park ranked second overall, but it is the top park in the nation to see the categories of amphibians, slugs and snails and spiders and scorpions, according to Kühl.