Eureeka's Castle is an American children's television series created by Debby Beece and Judy Katschke. It originally aired on Nickelodeon's Nick Jr. block from September 4, 1989 to November 10, 1991. The program featured various puppet characters who live in a giant's wind-up music box. The show was a joint development by Nickelodeon, animators Kit Laybourne and Eli Noyes of Noyes & Laybourne Enterprises, and the puppeteers at 3/Design Studio. R. L. Stine developed the characters and was the head writer for the episodes.