In the latest edition of GoParks, the National Park Foundation presents a quick guide to "25 Unforgettable National Park Hikes".
The list includes several classic hikes from Acadia to Zion, and everywhere in between. Making the list was the Andrews Bald hike in the Great Smoky Mountains. Most of the hikes are easy to moderate, but there are a couple of relatively strenuous hikes on the list. I've been fortunate enough to have hiked a couple of these trails, but there are a few that have been, or are now on my bucket list, such as The Narrows in Zion, Artist Point in Yosemite, and Bright Angel in the Grand Canyon.
You can view the entire list by clicking here (PDF file).