Son of the aforementioned William H. Vanderbilt, William Kissam Vanderbilt and his first wife Alva constructed a mammoth home at 660 Fifth Avenue known as the Petit Château. The mansion was located just down the road from the Vanderbilt Triple Palace.

An avid socialite, Alva was heavily involved in the home's design, which featured lots of entertaining spaces for hosting high-society gatherings. The grand drawing room was photographed here in 1924, two years before the home's demolition.

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Early photos show what New York homes looked like 100+ years ago

Early photos show what New York homes looked like 100+ years ago 