16. 12 East 77th Street
One of the more obscure Vanderbilt mansions was a Townhouse at 12 East 77th Street, designed in 1896 for Reginald Claypoole Vanderbilt. Vanderbilt was the founder and president of many equestrian organizations, although he gambled away most of his inheritance. Vanderbilt was also the grandfather of Anderson Cooper and the father of Gloria Vanderbilt.
The house was owned from 1916 to 1925 by Vanderbilt, who passed away from alcoholism at his Sandy Point Farm in Portsmouth, Rhode Island. He left the estate to his daughters upon his death, and it has retained much of the original wood paneling, fireplaces, decorative plaster and a curved wooden staircase. Brandeis University had owned and maintained the townhouse since 1960, but it listed the structure back in 2014 for $33 million.