Hotel & Casino

The Lagoon at Treasure Island Resort and Casino

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Treasure Island Resort and Casino
RSP Architects
Design Build
Welch, Minnesota
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.


“Knutson Construction is a highly-regarded partner, and I am happy to recommend them to any owner for any project now, and in the future. The Knutson team has demonstrated their core values while working with us, which have consistently lead to one successful project after another. Knutson always takes a proactive approach to solving problems and overcoming challenges, while keeping the lines of communication open and everyone working as a team. While working with Knutson, they have demonstrated that our best interests is their top priority.”

Darrell Breuer, Support Services Director

Treasure Island Resort & Casino

Trusted Partnership

Collaboration to us means not just working together, but standing together. Since 1997, Knutson Construction has partnered with Treasure Island, delivering projects on time and on budget to help the success of the Tribe.