
The greatest private house in New York
In 1887, Mamie Fish gave this house a Gramercy Park address without moving its Irving Place entrance. Stanford White transformed the interiors, and her lively parties made the house a social destination.
Decades later, Benjamin and Hilda Sonnenberg joined it to the building next door, creating a thirty-seven-room home filled with art, books and guests. Two extraordinary households, one unmistakable red-brick landmark.
Step inside No. 19


