New Bedlam Rest Home for the Emotionally Interesting
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When Homer was declared insane for wearing a pink shirt to work, he was sent to New Bedlam. A straightjacket from the institution was seen lying on the ground downtown. Duffman once referenced Homer's being in a "loony bin". While the power plant workers are cleaning trash from a highway, you can see a New Bedlam straightjacket littered among other assorted pieces of trash.
In the "Treehouse of Horror IV" segment "Terror at 5½ Feet", Bart was deemed insane for his disruptive behavior about a gremlin trying to disable the school bus. Even though his claims were true, he was still sent to the asylum on a trolley.