In the fall of 1930, Walter Chrysler finished his dream of creating a modern, skyscraper office building in the heart of downtown Manhattan. From the start, Chrysler's architects used interesting automotive touches to highlight the buildings automotive roots. Among these were hubcaps, an eagle emblem (used in gargoyle motif) and stainless steel (used to resemble chrome) laced around the building's beautiful spire. Another important element was the radiator cap used on the late '20's Chryslers, and shared on the Imperial models.
Here is a detailed shot of the 1926 Chrysler radiator cap:
And a couple shots of its application to the Chrysler building: