The Lagoon at Treasure Island Resort and Casino

Welch, Minnesota

  • Owner

    Treasure Island Resort and Casino


    RSP Architects

  • Delivery Method



    40,000 sq. ft.

In 2015, Treasure Island broke ground on an addition of a 40,000 square foot waterpark, upscale spa, and fitness center.

The waterpark is the second largest of its kind among the 18 Native American Casinos in Minnesota. There are many exciting aspects of The Lagoon including a 320 foot long lazy river, two body slides that loop around 276 feet in length, and a zero depth entry family pool that is great for the kids. The family pool will have lots of fun water features and a toucan slide. An island in the middle of the lazy river will have benches and chairs to relax on and provide a fun view of the waterpark.

The waterpark uses sphagnum moss to filter the 119,000 gallons of water naturally, using less chemicals than a traditional filtration system.

The Lagoon will also feature, the Barefoot Bar, an adult only pool area and swim up bar, which is the first of its kind in Minnesota. The adults only area features a hot tub and patio.