Epic Waters is DFW’s newest indoor waterpark in Grand Prairie, TX, showcasing 80,000 sq. ft. of year-round water fun! Just walking distance from The Epic, Epic Waters Indoor Waterpark is an incredible 80,000 square foot indoor/outdoor, open year-round waterpark with a beautiful curved, retractable roof. Referred to as a “cruise ship on land,’ there is something for every member of your family. Eleven waterslides are featured on the waterpark’s slide tower, and three of these slides are ‘first-of-their-kind’ within the industry.