According to the developers, one of the biggest attractions will be the Double Whirlwind waterslide that starts inside, loops outside, and is visible from I-94.
Another slide, The River Canyon Run, promises to dazzle riders with elaborate lighting as riders go down a nearly 500-foot slide.
New additions include an expanded swimming area and a zero-depth pool for young swimmers.
The 80,000-square-foot indoor water park and 414-room resort is expected to open July 1.