The Show was Filmed in Studio City, California
The pilot was filmed on the tropical island of Kauai, Hawaii, but the entirety of the series “Gilligan’s Island” was filmed in Southern California. A lagoon set was built at the CBS Radford Studios. However, in 1995 it was torn down to make room for more employee parking. The rest of the show was filmed on soundstages that later became home to “The Mary Tyler Moore Show.”