© Getty Image via CNTraveler.com You've had more than 50 days since summer began to step foot in a U.S. national park. But, if summer got away from you, fear not—there's still time to head outside. There are four more free admission days in 2017, and one of them is extra special. Why? The National Park Service turns 101 this month, and all of the country's national parks, monuments, and recreation areas will be free to explore on Friday, August 25. With more than 400 national parks in the U.S. and its territories, the park service has 120 parks that regularly charge admission fees, which range anywhere from $3 to $30. Lucky for us, those fees will be waived in just two weeks, as they are every year around this date.
If your local national park doesn't pique your interest, there's still time to head further afield. Alaska's Denali National Park recently announced that this year's litter of seven husky sled dog puppies has been born and is ready for visitors. Further south—much further, that is—you'll need to pack some sunscreen if you're interested in sandboarding in White Sands National Monument (New Mexico) or Great Sand Dunes National Park (Colorado). On the East Coast, make the three-and-a-half mile drive from Portland, Maine to the top of Cadillac Mountain at Acadia National Park for sunrise and spend the rest of the day exploring Jordan Pond and Bass Harbor Head Lighthouse.
If a crowd-free destination is your motivation, these five underrated national parks are also worth a visit, and may not have the same throngs of people as more well-known parks. If you're willing to drop a bit of cash, too, consider extending your national park exploration to a multi-day road trip. We've got 12 road-trip-worthy national parks, from Yellowstone to Shenandoah, here.
If you can't make it outside on August 25, all hope isn't lost: you'll still get fee-free access to all national lands on National Public Lands Day (September 30) and Veterans Day Weekend (November 11-12).
WATCH: Record crowds expected at national parks during eclipse, say officials (provided by Fox News)