<Li> Splash Island, Plainfield </Li> <Li> Tropicanoe Cove, Lafayette </Li> <Li> Yogi Bear's Jellystone Park WaterFun, Fremont </Li> <Ul> <Li> Adventureland, Altoona </Li> <Li> Arnolds Park, Arnolds Park </Li> <Li> Lost Island Amusement Park, Waterloo </Li> </Ul>

How many amusement parks are there in the united states