Goblin Valley State Park is a less-crowded alternative to Zion National Park in Utah.
East Coast destination? Visit Silver Springs State Park in Central Florida. The park's glass-bottom boat cruises showcase the animals and pristine seas.
The park features stunning cliffs, turquoise seas, and rugged beaches along the canal connecting the Strait of Juan de Fuca to Skagit Bay.
The fact that Cloudland Canyon isn't nearly as massive as the Grand Canyon really makes exploring it more enjoyable.
There is a little parking fee, but the park itself is totally free.
John Pennekamp Coral Reef Park in Florida is the place to visit if you want a taste of something truly extraordinary.
South Dakota's Custer State Park, a 71,000-acre jewel in the heart of the Black Hills, is on par with the best national parks in the world.
Silver Falls, the second Oregon State Park on the list, was a popular recommendation from our panel of experts.
Enjoy the great outside without the throngs of people who visit Washington state's national parks by taking in the stunning scenery of the islands and mountains.