Photo of Adventure Island in Colorado
Swimming Pools

Adventure Island

📍 Greeley, CO

★4.7(10 Google reviews)

Adventure Island is the indoor waterpark inside Greeley's Family FunPlex, a city-operated facility.

✓ indoor waterpark✓ kiddie area✓ water slides✓ city-operated✓ adult swim breaks✓ family day pass
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★★★★★Featured review by Last Great Adventure

Great place. Great Atmosphere! Family loved it. Outstanding value!

🏆 Family Action Verdict

Best for families with children ages 3–12. The dedicated kiddie area handles the under-48-inch crowd well, letting older kids tackle the main slides independently. The adult swim break schedule is rigid — factor it into timing if you're visiting with young children who may resist getting out of the water.

â„šī¸ What to Know Before You Go

💡The two main slides require a 48-inch height minimum — measure kids beforehand to avoid disappointment at the entrance.
⏰Adult swim breaks happen every two hours and apply to everyone — use them for snack breaks and restroom runs.
đŸŽŸī¸Monthly family passes offer the best per-visit value for Greeley-area residents who plan to return regularly.
🚗The indoor waterpark is closed seasonally for maintenance — check the city website for current closure dates before visiting.

đŸ’Ŧ What Families Are Saying

View all reviews →
4.7
★★★★★

10 Google reviews

Great for mixed-age kids45%
Strong value for day passes30%
Kiddie area praised15%
Gets crowded in peak season10%
L

Last Great Adventure

★★★★★

“Great place. Great Atmosphere! Family loved it. Outstanding value!”

L

Lauren Anderson

★★★★★

“We visited from out of town, and this place was great. The water was a decent temperature. The two big slides are 48" minimum. And the kiddie area is amazing. The third bigger slide has been closed for 20 years according to a lifeguard. Came with a 3 and 6 yo and would come back again.”

D

Deserray Bradney

★★★★★

“This place was extremely fun for my kiddos 6yrs old and 11yrs old. They do adult time every 2 hours which is also great to make the kids use the restroom and hydrate. Cons were too many people and not enough space.”

Reviews from Google

Overview

Adventure Island operates inside the Family FunPlex — a City of Greeley recreation facility that combines an indoor waterpark, multi-court gymnasium, and fitness center under one roof. The waterpark features two major slides requiring a 48-inch height minimum and a well-regarded kiddie area for younger visitors. Structured adult swim breaks every two hours encourage rest and hydration. The outdoor complex adds miniature golf and an amphitheater for extended visits.

🕐 Opening Hours

Monday11:30 – 18:00
Sunday11:30 – 18:00