Gulf State Park: Whether you set up camp under the stars or reserve a cottage, you can relax on the beaches and take the Cotton Bayou Trailhead to see the park's sweet little butterfly garden. (Stay up to date on what activities are open here.)

Rickwood Caverns State Park: Thrill-seekers can experience the beauty of a colorful cavern, limestone formations, and blind cave fish here.

Denali National Park: If the picturesque views along the Denali Park Road aren't enough to coax you into visiting, the wildlife here will certainly do the trick. (Be sure to reserve a permit for your drive.)

Lake Clark National Park and Preserve: Salmon swim, bright blue lakes glisten, and mountains stand tall at this national park and preserve. Put on your sneakers to explore the spruce-covered hills on the Tanalian Falls and Kontrashibuna Lake trail.

Picacho Peak State Park: To get a taste of adventure and beautiful desert views, check out the many trails the 1,500-foot-tall Picacho Peak has to offer.

Saguaro National Park: Get up close and personal — well, not too close — with the towering saguaro cacti. It's a nature enthusiast's dream come true.

Hot Springs National Park: Check out Bathhouse Row and enjoy the thermal waters at The Buckstaff Bathhouse, which are open, but visitors will need to follow park guidelines.

Lake Fort Smith State Park: Hike part of the Ozark Highlands Trail, which spans 240 miles, and enjoy the Boston Mountain Valley of the Ozarks to the fullest by camping. (See what activities are open here.)

Grizzly Creek Redwoods State Park: This park is a true hidden gem. Home to five miles of trails, you can enjoy a magnificent stroll amongst the redwoods.

Van Damme State Park: A picture-perfect, dog-friendly beach and a forest filled with ferns can be found at this sweet park. Bring your bike to cruise along the Fern Canyon Scenic Trail.

Dinosaur National Monument: Yup, dinosaurs once hung out here, and you can study the magnificent marks they left behind. Be sure to make your reservations prior to your trip.

Great Sand Dunes: Have your Polaroid camera in hand to capture the highest sand dunes in North America in all their grandeur. Grab your rentals for sand sledding and sandboarding, too.

Chatfield Hollow State Park: Picnicking, swimming, and pond and stream fishing are just a few activities to enjoy at this scenic spot.

Southford Falls State Park: How do trout fishing and hiking sound? They're both looking pretty fine at Southford Falls State Park.

Cape Henlopen State Park: Clamming, kayaking, and chilling on a floating mat on the water are some activities that'll make this trip shine.

Fenwick Island State Park: Rent a sailboat at this ocean retreat or spend your time swimming, kayaking, paddle-boarding, riding in a catamaran, and basking in the sunshine.

Dry Tortugas National Park: Grab your snorkeling mask to spot coral, fish, and shipwrecks under the sea. Getting to this park via seaplane or ferry — which are both bookable online — will be an adventure in and of itself.

Everglades National Park: It will be a surreal experience seeing endangered and unique species firsthand, like the American crocodile, Florida panther, and manatee. Admire and snap away on your camera — from a distance.

Cumberland Island National Seashore: Who said an island getaway couldn't revolve around marshes, forests, camping, and nature? Biking the island with your set of wheels will show there's much to explore.

Amicalola Falls State Park: See Mother Nature truly flex in the Chattahoochee National Forest. The 729-foot cascading Amicalola Falls is a beauty that can't be missed.

Haleakalā National Park: There are three parts to this beautiful park: the summit has volcanic landscapes that are sure to impress; Kīpahulu is a lush rainforest with coastal views; and the Haleakalā Wilderness is perfect for a backpacking excursion.

Hawai‘i Volcanoes National Park: This scenic national park is home to two of the most active volcanoes in the entire world: Kīlauea and Mauna Loa.

Craters Of The Moon: Unless you're hopping in a rocket sometime soon to walk on the actual moon, this extraordinary volcanic site comes pretty close to it.

Hagerman Fossil Beds: If you’re passionate about paleontology, you’ll really enjoy checking out the fossil displays here.

Gateway Arch National Park: Revel at the massive “Gateway to the West” that stands 630 feet tall.

Ferne Clyffe State Park: The extraordinary rock formations at this beautiful park deserve a spot on your camera roll.

Indiana Dunes National Park: If you've never tried geocatching, now is the time to start. Download the GPS app, visit the dunes, and let the search begin.

Brown County State Park: Check out the gullies, unparalleled forest views, and mountain biking opportunities that make this a postcard-perfect spot.

Pikes Peak State Park: This state park is one of Iowa's top-photographed spots. Enjoy a wooden boardwalk stroll to Bridal Veil Falls and have your camera ready.

Backbone State Park: Plan to relax by the lake and embrace the beauty of the oldest state park in Iowa. Hike to the "Devil's Backbone," one of the most favored hikes in Iowa.

Wyandotte County Lake and Park: Bring your pup on this vacay to enjoy an off-leash area. While you're there, take advantage of the lake and archery range (but if you plan to use it, be sure to bring your own gear).

Cheney State Park: Nestled along the shoreline of one of the best sailing lakes in the country, you'll want to have your sunnies, beach towel, and sunscreen on deck for this visit.

Mammoth Cave National Park: If you want to take a cave tour, you should definitely do it here. Mammoth Cave is the longest recorded cave system on the planet.

Cumberland Gap National Historical Park: This original path to the west will take you into the heart of Kentucky wildlife. Hike it — you'll like it.

Lake Bruin State Park: Rent a flat-bottom fishing boat to reel in some bass, as this is a stop on the Louisiana Bass Trail.

Grand Isle State Park: Enjoy taking a dip in the warm, bathtub-like waters of the Gulf and set your sights on the scenic lagoons.

Acadia National Park: This "Crown Jewel of the North Atlantic Coast" has trails spanning 158 miles and turquoise waters almost too pretty to be real.

Quoddy Head State Park: Fill up your cooler with goodies for a day spent relaxing in the sunshine by the red-and-white-striped West Quoddy Head Light.

Assateague Island National Seashore: You may have heard of Assateague’s wild horses, but admiring them in person from a distance will be the true highlight of your summer.

Piscataway Park: Two boardwalks and a fishing pier will keep any summer lover occupied. Scope out this beautiful natural home for ospreys, beavers, and bald eagles.

Cape Cod National Seashore: Six beaches to choose from? Shell yeah. Soak up the sun at Nauset Light Beach and snap a pic in front of Nauset Lighthouse.

Halibut Point State Park: Head to the sweet town that is Rockport for a charming escape. After exploring the trails, head into town for some window shopping.

Straits State Park: Capture beautiful views of the Mackinac Bridge. You will love the camping and water fun here.

Keweenaw National Historical Park: Learn all about the copper mining dating back to 7,000 years ago.

Voyageurs National Park: Keep your eyes peeled — you may just see the aurora borealis at this destination.

Gooseberry Falls State Park: Relax and enjoy the picture-perfect waterfalls of Lake Superior.

Gulf Islands National Seashore: Glistening blue waters, white sand beaches, lush marshes, and picturesque nature trails will make you want to stay here longer than just a pit stop in between destinations.

Ship Island: Swimmers, summer lovers, and beach enthusiasts alike come here for the gorgeous gulf waters. Set up a picnic lunch and enjoy your time in the sunshine.

Weston Bend State Park: This park offers fantastic views of the Missouri River. Enjoy this wooded beauty while cruising down the three-mile bike trail.

Johnson’s Shut-Ins State Park: The St. Francois Mountains around this park will make your outdoor adventures a true explorer's delight.

Glacier National Park: Alpine meadows, lush forests, glistening lakes, and towering mountains, anyone? Glacier has it all. Explore the charm of the old chalets and the natural beauty of Going-to-the-Sun Road.

Greycliff Prairie Dog Town State Park: If prairie dogs hold a special place in your heart, this state park is a must-visit. These adorable creatures will make you melt as you look at them through binoculars.

Chadron State Park: Escape to the canyons of Nebraska's Pine Ridge at Chadron State Park, where the hiking and biking trails are ideal for both beginners and experts.

Smith Falls State Park: Get ready to make a splash tubing, kayaking, and canoeing the day away. You'll also find Nebraska's tallest waterfall here.

Cave Rock State Park: Nestled into the southeastern shoreline of Lake Tahoe lies this sandy beach that's perfect for swimming and basking in the sun.

Great Basin National Park: Take on the self-guided Mountain View Nature Trail, or simply say you've gone fishing for the day.

White Mountain National Forest: Swim, hike, bike, repeat. With hiking trails that span 1,200 miles, you won't run out of nature to explore.

Saint-Gaudens National Historical Park: One of the greatest sculptors in the U.S., Augustus Saint-Gaudens once called this place home. Enjoy his art throughout the trails and outdoor monuments at this historic beauty.

Paterson Great Falls National Historical Park: Walk a self-guided tour and enjoy the Passaic River's Great Falls.

Cape May Point State Park: The shoreline, dunes, freshwater ponds, and Cape May Lighthouse are beautiful sites to see. Make room in your camera roll for dreamy seaside snaps.

Carlsbad Caverns National Park: This natural beauty has over 119 caves. Take your wanderlust below-ground to explore this otherworldly cavern via the Big Room trail. You can even watch bats take flight from a distance.

Gila Cliff Dwellings National Monument: History buffs will love checking out the walls and caves of the Mogollon people, dating as far back as from the late 1200s.

Watkins Glen State Park: The most popular of the Finger Lakes State Parks is Watkins Glen. Be dazzled by its long stream, cliffs, gorge, and many waterfalls.

Taughannock Falls State Park: Taughannock Falls' waterfall is downright breathtaking. Enjoy it all while boating, fishing, hiking, and more.

Cape Hatteras National Seashore: Embrace a day at the seashore by relaxing in the sand with a juicy book, kayaking, and snapping pictures by the Cape Hatteras Lighthouse.

Cape Lookout National Seashore: Head to Cape Lookout National Seashore's barrier islands to see lighthouses, search for shells, and breathe in the salty air.

Grahams Island State Park: If you're into fishing, this spot will o-fish-ally be your favorite playground. You can also explore the hiking trails and go for a swim.

Lake Metigoshe State Park: Crystal blue waters and dreamy sunsets make this the ultimate spot to unplug in the Turtle Mountains.

Cuyahoga Valley National Park: Explore the history-rich route of the Ohio and Erie Canal via car or by foot.

Hocking Hills State Park: The waterfalls, lush greens, cliffs, and gorges here will make any hiker swoon. Admiring all the different rocks that are rich in history will be an added bonus.

Keystone State Park: Make the most of a day trip here. Spend the afternoon hiking the eight miles of trails, take a refreshing dip at the beach, enjoy a picnic, or do all three.

Lake Thunderbird State Park: If you're traveling via RV or a camper van, Lake Thunderbird is the ultimate spot. Relax, enjoy the ride, and soak up the sunrises and sunsets over the lake.

Mt. Hood National Forest: This outdoor enthusiast's delight offers sparkling lake views, scenic drives, climbing, and quaint picnic areas.

Bates State Park: Situated in the Blue Mountains, your thirst for scenic backdrops will be fulfilled here. Hike the trails that stretch over three miles and stop at the viewing points of the valley and old mill pond.

Cherry Springs State Park: For the cherry on top of your summer, visit the rows and rows of black cherry trees in this splendid park.

Ohiopyle State Park: This spot is known for its whitewater boating. Adventure seekers should definitely check out Meadow Run, which boasts two natural waterslides.

El Yunque Rain Forest: Take a dip in the natural pools nestled under the waterfalls. If you're lucky, you might get a glimpse of the Puerto Rican parrot and coquí frog that are local to the island.

Tres Palmas Marine Reserve: Relax underneath the palms before exploring the water. You might even spot the colorful reef fish here if you book a private snorkel adventure.

Lincoln Woods State Park: You'll really be seas-ing the day by fishing for trout, taking a rejuvenating hike, or sunbathing at the beach.

Colt State Park: Bike ride along four miles of scenic trails, then make a pit stop for artsy pics by the acres of fruit trees and lush flower bushes.

Congaree National Park: Soak up the beauty of Cedar Creek for a leisurely afternoon spent in the sunshine, or head to the Boardwalk Trail for a quick, rewarding hike.

Huntington Beach State Park: You'll fully enjoy the refreshing sea breeze on this camping trip. Kick back and relax on Grand Strand beach.

Badlands National Park: This "Land of Stone and Light" is an attraction for travelers from all over the world. Enjoy an exquisite sunrise or spot stars in the evening sky at this otherworldly spot.

Wind Cave National Park: You'll feel like you're in an old-time-y movie when taking in the rolling hill views of one of the oldest national parks in the U.S. Spot prairie dogs, elk, and bison here.

Cades Cove: Check out a working gist mill, log houses, barns, and historic structures from the 18th and 19th centuries.

Radnor Lake State Park: Your IG feed will be bloomin' with wildflowers and wildlife sightings (such as otters, owls, and even minks).

Guadalupe Mountains National Park: Check out the biggest wilderness area in all of Texas — with a complete backpacking itinerary, of course. More than 80 miles of trails await.

Big Bend National Park: Experience unique bird species at one of the park's birding hotspots. You can also head to the Chisos Basin for pristine views.

Zion National Park: Learn about the colorful sandstone cliffs in hues of red, pink, and cream. The contrast against the bright blue sky will look stunning on your IG feed.

Bryce Canyon National Park: Take the dreamiest hike with your partner under a full moon or plan a photo shoot against the red rocks and pink cliffs.

Marsh - Billings - Rockefeller National Historical Park: If you love covered bridges, pastures, sugar maples, gorgeous old stone walls, Marsh - Billings - Rockefeller is the place for you.

Quechee State Park: Quechee Gorge is a favorite spot for many sightseers every year.

Grayson Highlands State Park: Access both the Virginia Highlands Horse Trail and Appalachian Trail from this beautiful spot.

Shenandoah National Park: This national park will let you stroll the trails, experience the wildlife, and embrace the many photo ops across the night sky.

Olympic National Park: If tidepooling is on your bucket list, you can try it at Olympic National Park, along with fishing, backpacking, and hiking.

Jarrell Cove State Park: Get to this little slice of paradise via bridge or boat. Enjoy the amphitheater and take a dive into the jewel-colored water.

New River Gorge National River: For outdoor enthusiasts who are down for a rafting challenge, this rough whitewater river is waiting. Booking dates and times are still available online.

Blackwater Falls Sate Park: Snap scenic pics of the amber waters at Blackwater Falls and the 57-foot cascade. Have your hiking boots on to explore up to 20 miles of trails.

Apostle Islands National Lakeshore: Kill two birds with one stone by kayaking between the islands and soaking up the beautiful views.

Devils Lake State Park: Lakeside picnics and beaching with extraordinary views — what more could you ask for? Be sure to grab your Wisconsin State Park System vehicle admission sticker online before hitting the road.

Grand Teton National Park: Experienced hikers will be enticed to conquer the rough, steep terrain on the trails here.

Buffalo Bill State Park: Take your camper van here or pitch a tent at one of the park's campgrounds. (Be sure to book your reservation in advance.) Once you arrive, enjoy fishing and picnicking.