William K. Vanderbilt House

The William K. Vanderbilt House, also known as the Petit Chateau, was a Châteauesque mansion at 660 Fifth Avenue in Midtown Manhattan, New York City, on the northwest corner of Fifth Avenue and 52nd Street. It was across the street from the Triple Palace of William Henry Vanderbilt, which occupied the entire block between 51st and 52nd Streets on the west side of Fifth Avenue.[1][2][3] The mansion was built for William Kissam Vanderbilt, second son of William H. Vanderbilt and Maria Louisa Kissam from 1878 to 1882.[4] Determined to make her mark in New York society, Vanderbilt's wife Alva worked with the architect, Richard Morris Hunt, to create the French Renaissance-style chateau. It was sold to real-estate developer Benjamin Winter, Sr. in 1926, demolished in 1927,