Parks are arranged alphabetically.
Note: The park appears to have closed in 2009.
Angola (near Fort Wayne)
When it was open, this was a medium-size park that included a petting zoo, a couple of small roller coasters, and some waterslides.
Santa Claus (near the Kentucky border). And yes, you read that right. That's the name of the small town that hosts the park.
Santa reigns dearly at his summer hangout, Holiday World, in southern Indiana. In addition to the Christmas themeing, the park highlights other holidays and offers the wonderful Splashin' Safari waterpark (included in admission).