The ONE Thing You Must Do In A Swimsuit In Each U.S. State

Fifty-one tricks to a truly endless summer around the country.

If you could tell visitors to do ONE thing in your state, what would it be?

We asked a handful of Huffington Post editors and our Facebook friends for the all-time best activity to do in each state. The only rule? The activity must involve a swimsuit, because it's the end of summer and we're ready to go out with a splash.

Not every adventure below is 100 percent perfectly suited for bikini attire: Some may include mountain hikes or cavern crawls that call for at least a T-shirt. But in any case, the lineup of waterfalls, canoe trips, national parks and surf spots is worth laboring on... just in time for Labor Day Weekend.

In ALABAMA, swim through waterfalls at Little River Canyon.

This national preserve has all sorts of spectacular swimming holes. Make sure yours is a designated safe spot -- like Marthas Falls -- before you jump in.

In ALASKA, kayak the Prince William Sound.

A sea kayak is the best way to see Alaska's rugged waterfalls, hidden coves and glaciers.

In ARIZONA, swim in the Grand Canyon.
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A series of bright blue waterfalls glitters on the Canyon floor, as part of the Havasupai Indian Reservation. Look out for seasonal closures, and make sure swimming is permitted before you jump in.

In ARKANSAS, get steamy in Hot Springs National Park.
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In CALIFORNIA, surf the beaches of San Clemente.
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There are lots of spots for beginners in this authentic surf town, where the tacos are as precious as the sunsets.

In COLORADO, raft the Arkansas River.
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This hardcore whitewater experience has tranquil parts, too.

In CONNECTICUT, explore Kent Falls State Park.

Picnic spots and an epic waterfall hike make this the ideal natural playground.

In DELAWARE, hit up the Rehoboth Beach Boardwalk.
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This boardwalk hasn't lost its vintage vibe... and its frozen custard cones will never go out of style.

In FLORIDA, watch a sunset on Clearwater Beach.
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In GEORGIA, "shoot the Hooch."
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The Chattahoochee River is navigable via kayak, raft, tube or stand-up paddle board. These awesome activities are locally known as "shooting the Hooch."
In HAWAII, visit the best beach in America.
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Famous expert Dr. Beach named Waimanalo Beach the best beach in the country for 2015. Get it while it's (literally) hot.

In IDAHO, camp on Redfish Lake.
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A number of picture-perfect camping spots will get you close-up to nature for cheap. (Hurry before the season ends!)

In ILLINOIS, kayak through Chicago.
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A local might find it cheesy, but kayaking is hands-down the most epic way to tour Chicago's dazzling skyscrapers.

In INDIANA, take a dune day.
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Fish, swim and soak up the last bits of summer in Indiana Dunes State Park, on the Lake Michigan shore.

In IOWA, visit the "other" Great Lakes.
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The Iowa Great Lakes offer about 15,000 pristine acres of fishing, boating and retro amusement park rides.

In KANSAS, catch air at Kansas City Watersports.

This skatepark on water offers all sorts of jumps and ramps for wake boarders -- both beginner and veteran -- to practice their skills.

In KENTUCKY, climb a canyon at Red River Gorge.

At Torrent Falls Climbing Adventure, you can both climb and rappel various rocky faces in the verdant Red River Gorge. It's best to be fully clothed for the climb, but there's always time for a bathing suit breather in the waterfall afterward.

In LOUISIANA, get tubular on the Amite River.

Tiki Tubing is simple: tubes, sun and LOTS of fun.

In MAINE, visit Acadia National Park.
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In MARYLAND, get crabby in Ocean City.
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The beach and the boardwalk are great, but it's those spicy crab dinners that'll really make your summer.

In MASSACHUSETTS, make friends with the whales.
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Most people don't know that Massachusetts has been named one of the best whale watching spots in the world. Head out to Cape Cod for a peek, and then take a swim for yourself.

In MICHIGAN, have a classic day on the lake.
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Few places trump the charm of Michigan's little lake towns. Start in Saugatuck, home to some of Lake Michigan's best beaches and art galleries galore.

In MINNESOTA, canoe the Boundary Waters at sunset.
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The pristine waters of Superior National Forest offer an awe-inspiring slice of solitude.

In MISSISSIPPI, savor uncrowded beaches at Ship Island.
In MISSOURI, dive into an Ocean of Fun.
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The waterpark to end all waterparks brings cabanas, "monsoons," and super-steep slides to Kansas City.

In MONTANA, hike the Grinnell Lake Trail.
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A view of Glacier National Park is MORE than worth the trek.

In NEBRASKA, zen out at Heartland of America Park.
In NEVADA, hit up a Las Vegas pool party.
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The glitzy pools on the strip offer daytime parties the likes of which you've never even seen in a club. If a DJ during the day isn't your thing, the non-party pools are just as pleasant.

In NEW HAMPSHIRE, paddle the Androscoggin River.
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A three-day guided canoe trip takes you past hiking spots and fishing holes that nobody else can find.

In NEW JERSEY, catch one last round of fireworks on the beach.

A number of firework celebrations down the Jersey Shore will feature epic end-of-summer shows.

In NEW MEXICO, raft the Rio Grande.
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Calm waters become rapids on one of the most famous rivers in the country, with scenery that most rafting trips won't show you.

In NEW YORK, swim in some of the bluest water you've ever seen.

If the Caribbean seems too far away, the brilliant blue water at Green Lakes State Park makes for a great substitute.

In NORTH CAROLINA, watch sunrise in the Outer Banks.
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The calm from 1,000 yoga sessions is captured in a single OBX sunrise. Catch it from the beach, near a lighthouse or on a stand-up paddle board.

In NORTH DAKOTA, kayak the Missouri River.

Theodore Roosevelt had high praise for the river route, along which you'll find Lewis and Clark historic sites.

In OHIO, "fall" in love at Hocking Hills.
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This otherworldly state park is a maze of cliffs, caves and waterfalls to explore.

In OKLAHOMA, hang in a cave at Robbers Cave State Park.
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Legend has it that Jesse James visited this woodland hole-in-the-rock, now park of Robbers Cave State Park. It's not a beach, per se, but sunny creek beds will still give you a nice tan.

In OREGON, swim with seals on the coast.
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If heaven is a place on Earth, then it's Samuel H. Boardman State Park. Wildlife, ancient trees and empty trails are yours to enjoy.

In PENNSYLVANIA, go BIG at Hersheypark.

There's nothing more classic than a day at the waterpark, with a candy-fueled twist.

In RHODE ISLAND, anchor down on Block Island.
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Bike rides, boating, 17 miles of beach... you name it, this charming island's got it.

In SOUTH CAROLINA, spend a day at the Salty Dog Cafe.
Flickr/Scott Beale

This world-famous eatery is right on the water. Take a happy hour cruise on the Salty Dog catamaran, and grab a drink on land before buying your iconic Salty Dog T-shirt.

In SOUTH DAKOTA, get swanky on Sylvan Lake.
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Known as the "crown jewel" of Custer State Park, Sylvan Lake has an incredible lodge where you can wake up near the water.

In TENNESSEE, trek to Ruby Falls.
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Temperatures aren't exactly tropical inside Lookout Mountain, but this underground waterfall is still a pleasant place to feel the mist.

In TEXAS, dunk in Barton Springs.

This massive three-acre swimming pool is fed from an underground spring.

In UTAH, take the water route through Zion National Park.
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When hiking The Narrows, you won't find a trail. Instead, follow the river's path through a gorge with walls that are hundreds of feet high.

In VERMONT, cruise Lake Champlain.
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Take a boat ride for brunch or a lobster feast, and jump in the water afterward.

In VIRGINIA, find your very own swimming hole.
The state is stacked with all-natural places to swim, like Panther Falls.
In WASHINGTON, wine taste and wind down on Lake Chelan.
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Rent a room on this stunning lakeshore, and enjoy vineyard tastings after swimming in the sun.

In WASHINGTON, D.C., paddleboat the Tidal Basin.
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Our capital's major monuments are best seen from the water.

In WEST VIRGINIA, fly fish the Greenbrier River.
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You won't find a more scenic place to learn the art of fly fishing.

In WISCONSIN, go full-on tourist at the Wisconsin Dells.
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You can watch the Dells' famous water ski shows between trips to the water park and rides on the zip line at this all-in-one family fun destination.

In WYOMING, visit the "other" Grand Canyon.
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The Grand Canyon of the Yellowstone is arguably one of our country's most little-known natural gems. Late summer and early fall are perfect times to visit Yellowstone National Park and see this wonder.

Related on HuffPost:

Ten Best U.S. National Parks