Step 1 : Introduction to the question "In its final episode, what TV show revealed that the hospital was actually inside a snowglobe?"
On this day in 1988, TV viewers saw one of the most famous — and perhaps the most debated — series finales in TV history. The episode marked the end of St. Elsewhere, an NBC drama about St. Eligius, a run-down Boston hospital headed by chief of staff Dr. Donald Westphall (Ed Flanders). The “St. Elsewhere” finale was the first big “it was all just a dream” finale, ending with the revelation that St. Eligius hospital and its staff were all the creations of an autistic boy and took place inside a snow globe. Although it enraged fans at the time, it’s now one of the most famous finales ever.