The entire zoo seen in the picture was an interior set.
The interior sets for the houses are constructed as required.
The interior set took seven weeks to build and two weeks to get into the studio.
Once sufficient location footage had been obtained, interior sets were designed and constructed in the studio.
Four interior sets were constructed for the most important locations of the film.
King used the hotel that inspired him to write the book as the main exterior and the design of the interior sets.
Cover shots were filmed on shore and in interior sets.
Although the interior sets were carefully constructed, the filmmakers did face some location-related challenges.
Thus interior sets required ceilings, which were then not often seen in movies.
The set's exterior doors are narrower than the doors on the interior set.