Adventure Island
📍 Greeley, CO
Adventure Island is the indoor waterpark inside Greeley's Family FunPlex, a city-operated facility.
🏆 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.
ℹ️ What to Know Before You Go
💬 What Families Are Saying
View all reviews →10 Google reviews
G Reviews from Google
Lauren Anderson
a year ago
“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.”
Last Great Adventure
a year ago
“Great place. Great Atmosphere! Family loved it. Outstanding value!”
Deserray Bradney
a year ago
“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.”
💬 What parents mention
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.
