The Canteen

The canteen was first seen in Episode 301: Kris Kristofferson and Rita Cooledge. It was a place where the Muppet cast and crew could have meals, which were coked by The Swedish Chef and served by Gladys.

The canteen was seen during the third and fourth seasons, but it was abandoned after the fourth season (though Kermit did mention the canteen in Episode 524: Roger Moore).