USA road-tripping: the best camping spots

With 58 National Parks to choose from, the United States has glorious campsites as far as the eye can see. For those who love getting fresh air and being out in nature, camping trips are mandatory. Whether you have an annual pass for national parks or you're a first-time explorer, the options are endless. Based on a list from the lifestyle site Greatist, click through the following gallery to see 15 stunning places you will want to set up camp in.