Visit our newly renovated aquatic park. Enjoy the best beach of beach experiences that includes clean city water, sandy zero depth entry, and large inflatable play structures! Troll Beach is the result of a complete makeover of the Mandt Park Pool. New innovative play structures, a rebuilt full concession stand, pool chairs and umbrellas, are just a few of the updates for this historic pool. Our trained lifeguards are ready to welcome your group for a day of great swimming and Norwegian-like hospitality.