After more than a year of construction, Zehnder's Splash Village Hotel and Waterpark opened its new $20m Atrium Waterpark to the public on October 31.

Located in Frankenmuth, Michigan, Splash Village is now the only entertainment centre in the state to offer two distinct family waterparks.

"Nine years ago we opened Splash Village with a 20,000sq.ft waterpark," said Al Zehnder, chairman and CEO of the waterpark operator.

"The Atrium Waterpark is our new 29,000sq.ft expansion that includes a retractable roof, an outdoor pool, two, six-storey thrill rides, family cabanas and more."

The Atrium Waterpark also features a 20-person hot tub; a six-storey family raft ride; a six storey super loop body slide; zero-entry activity pool with water geysers; water basketball and volleyball; action river; and various fun family aquatic activities.

The original waterpark area that opened in 2005 is highlighted by a lazy river, whirlpool hot tub, 400-gallon dumping bucket, water geysers and sprays, a four-story tube slide and the Elf Hollow Café.

"We also expanded our hotel accommodations with an additional 32 guestrooms, 22 of which offer panoramic views of the waterpark," Zehnder added.

Splash Village offers a total of 178 guestrooms including 74 deluxe suites. The expansion project also doubled the number of waterpark locker rooms and expanded the indoor arcade to offer 45 games.