This strange but well known landmark is something that many people have seen who either don’t know what it is or think it is something that it is not. I’m sure of it. Or not.
The “Theme Building” was built at LAX in 1961 and is a wonderful example of Mid-Century “Googie” architecture. I have always loved both Mid-Century and “Googie” and I note that the Wikipedia page for this building uses both of those terms. Googie architecture or style is used to describe all sorts of modern and space-age influenced architecture, signage, and interior motifs. Think Jetsons. A common theme is the use of the boomerang shape for ashtrays, serving plates, tables, and all manner of decorative patterns on almost anything.