This Colorado Indoor Waterpark Is Surprisingly Fun For Adults And Costs Just $10 To Visit

Two of the big waterslides here are set aside just for adults. That alone made me sit up straight, because grown-ups rarely get first dibs on anything at a waterpark.

The fun keeps stacking up from there. There’s a lazy river, a zero-depth pool, swimming lanes, and even a water basketball hoop.

Then there’s a steam room, which feels like a sneaky bonus for tired parents.

I like how this Colorado spot treats adults like they deserve a splash day too. Admission costs less than a fancy coffee and a muffin.

You can float, race, shoot hoops, and warm up without draining your wallet.

I believe the best surprises are the cheap ones you can repeat often. So why do more grown-ups not know about this place yet?

Grown-Ups Finally Get Waterslides Of Their Own

Most waterparks quietly hand the best rides to the kids. Adventure Island Indoor Waterpark, inside the Greeley Family FunPlex, flips that script in a fun way.

The park features two large waterslides set aside for adults. That means you can take a turn without feeling like the tallest person in a line of second graders.

Massive slides are part of the bigger lineup here too. They twist and drop inside a building, so the weather outside never cancels your plans.

Colorado winters can be long and gray. Having a slide day available in January feels like a small act of rebellion against the snow.

Slide availability can change, since rides sometimes close for repairs or upkeep. A quick call before you go can save you from disappointment at the top of the stairs.

Wear a swimsuit that stays put, because slides have a talent for testing fabric. Tie long hair back and remove loose jewelry before climbing up.

Go with a friend and race each other to the bottom. Somebody will lose, and that somebody will absolutely demand a rematch.

Let The Lazy River Do All The Work For Once

Floating in circles while a current pushes you along is pure relaxation. The lazy river here might be the most popular feature in the whole building.

You don’t need a plan. You just step in, lean back, and let the water carry you past everyone working harder than you.

Some people use it for exercise instead. Walking against the current turns a lazy loop into a sneaky low-impact workout for your legs.

That flexibility makes it great for adults with different moods. One lap can feel like a vacation, while the next can feel like leg day.

Kids love the river too, so expect company on busier days. Weekends tend to fill up fast, so weekday afternoons may give you more room to drift.

Keep an eye on the clock while you float. The pool area often pauses near the end of each hour for adult swim, which is a nice perk for grown-ups.

Bring water to drink between laps. Floating feels effortless, but warm indoor air and chlorine can leave you thirstier than expected.

The Price Tag Is The Biggest Shock Of All

Cheap fun is rare in Colorado these days. That’s why the admission here feels almost too good to believe.

Adult entry to the aquatics area costs less than many movie snacks. Youth, seniors, and little kids pay even less, as long as small children come with a paying adult.

The city runs the Greeley Family FunPlex, which helps explain the friendly rates. It’s a public recreation center, not a pricey resort with a gift shop at every corner.

Frequent swimmers can look into punch passes or memberships. Those options can stretch your dollar even further if you plan regular visits.

Check open swim times before heading over. The waterpark opens at noon daily, but closing times shift between weekdays and weekends.

Monday, Wednesday, and Friday run the longest, until 8 p.m. Tuesday and Thursday wrap up at 5 p.m., while weekends close at 6 p.m.

Arriving right at noon gives you the fullest day. Plus, you get first crack at the slides before the crowd catches on.

Warm Up Slowly In The Steam Room

After a few slides, your body may start asking for a break. The steam room answers that request beautifully.

This feature sets the place apart from many basic city pools. It gives adults a cozy spot to unwind while the kids splash nearby.

Steam feels especially nice on chilly Colorado days. Coming in from icy wind and sitting in warm mist is a pretty great trade.

The room was refreshed not too long ago, which is good news for regulars. Like any feature, though, it can occasionally close for maintenance.

Keep your sessions short and listen to your body. Ten minutes or so is plenty for most people, especially after active swimming.

Drink water before and after you sit in the heat. Steam can sneak up on you faster than a lazy river current.

Bring a towel to sit on and wear flip-flops when walking over. Your future self will appreciate a calm, comfortable visit with no awkward slips.

Bring Your Best Water Basketball Trash Talk

Shooting hoops while standing in a pool feels silly in the best way. A water basketball hoop sits ready for anyone brave enough to miss in public.

Nobody looks graceful jumping in water. That levels the playing field between the athletic friend and the friend who mostly came for snacks.

Swimming lanes give serious swimmers a place to work too. You can knock out laps, then switch to goofing off when your arms say enough.

The zero-depth pool slopes in gently, like a beach. Little kids can splash safely while adults wade nearby without fully committing to the water.

Mixing these areas makes group trips easy. A family with a toddler, a teen, and a tired parent can all find their own corner.

Bring a ball only if rules allow it, so check with staff first. Lifeguards keep things running smoothly, and following their calls keeps everyone’s day fun.

Pick teams, keep score loosely, and laugh at your airballs. Water basketball rewards enthusiasm far more than skill.

Your Workout Can Happen Before The Fun

Gym first, slide later sounds like a smart deal. The Greeley Family FunPlex makes that combo easy under one roof.

The building includes a fitness center with a weight room. Fitness classes and personal training options give you even more ways to break a sweat.

An indoor walking and running track loops through the space too. That’s handy when Colorado sidewalks turn slick or the wind gets grumpy.

The Fieldhouse adds a multi-court gymnasium. It works for basketball, volleyball, badminton, inline hockey, and soccer.

Building hours run much longer than pool hours. Weekdays start as early as 5 a.m., which suits early birds who like finishing workouts before work.

A smart plan is to lift or jog, then reward yourself with the lazy river. Your muscles get a gentle float, and your brain gets a treat.

Pack a separate bag for gym clothes and swimwear. Nobody enjoys digging a damp swimsuit out from under sneakers.

Putt Through Greeley Water History Outdoors

Mini golf with a history lesson? Outside the building, an 18-hole course is themed around Greeley’s water history.

It’s a clever match for a waterpark visit. You spend the morning in the water, then putt past stories about how water shaped the town.

Adults tend to get competitive fast on courses like this. One bad bounce can turn a calm family game into a heated rivalry.

The course is a strong choice on warm days. After hours in chlorine, some fresh air and sunshine feel wonderful.

Wear sunscreen, since Colorado sun can hit hard at this elevation. A hat helps too, especially during long afternoon rounds.

Plan for seasonal changes with outdoor activities. Mini golf depends on weather, while the waterpark stays open year-round inside.

Try keeping one scorecard for bragging rights. Then laugh when the person who called themselves a pro needs five putts on hole three.

Summer Nights Bring Music And Picnic Blankets

An evening concert after a pool day is hard to beat. The FunPlex has an outdoor amphitheater that hosts summer concerts.

Visitors can bring their own picnics, which keeps things relaxed and affordable. Pack sandwiches, fruit, and something sweet, then grab a spot.

That setup fits the whole vibe of the place. It feels like community fun, not a pricey night out.

Next door, Twin Rivers Community Park adds even more room to roam. It features a playground and a pond for slower moments outside.

Kids can burn leftover energy on the playground while adults stretch out nearby. A walk by the pond makes a calm ending to a busy day.

Check the summer concert schedule ahead of time, since lineups change. Bring a blanket or low chairs for comfort.

Toss a light jacket in the car too. Colorado evenings can cool down quickly once the sun drops behind the horizon.

Fuel Up And Find Your Way There

Swimming makes people hungry in a hurry. The FunPlex café serves snacks, light meals, and refreshing beverages to keep your energy up.

Vending machines can get pricey, so many families pack their own snacks. Bringing a cooler for the car is a simple way to save even more.

You’ll find Adventure Island Indoor Waterpark at the Greeley Family FunPlex, 1501 65th Ave, Greeley, CO 80634. It sits on the west side of town, beside Twin Rivers Community Park.

Greeley makes an easy day trip from much of northern Colorado. Fort Collins and Loveland are both reasonable drives away.

Pack a swimsuit, towel, flip-flops, and a lock for the locker room. Goggles help if you plan to swim laps.

Call ahead to confirm which slides and features are running that day. Repairs happen, and a quick check keeps expectations realistic.

Then go enjoy one of the best-value fun days around. Your wallet stays happy, and your inner kid gets a long overdue splash.