I just realized something I can't believe I never noticed before.
First, here is the façade of the haunted mansion in Disneyland:
Next, here is the façade of the Haunted Mansion in Disney World:
Finally, here is The Franke Center for the Arts, formerly The Marshall Civic Center, in Marshall, MI., the building in which for nine years I had the pleasure of writing a directing annual haunted houses (before the city sold the building and we moved to the outdoor haunted trails:
And here is what it took me until today to notice: