19 August 1976
| Andrew Gildersleeve|
| Main Road and Love Lane, Mattituck, New York|
Barclays Center, Brooklyn Botanic Garden, Hotel Pennsylvania, Madison Square Garden, New York Botanical Garden
Andrew Gildersleeve Octagonal Building Wikipedia
The Andrew Gildersleeve Octagonal Building, also known as Mattituck, the Octagon House and Mattituck Octagon House is an historic octagon house located at Main Road (NY 25) and Love Lane in Mattituck, New York. It was built in 1854 by Andrew Gildersleeve, a master carpenter, who used it for his family home as well as for a store.
On August 19, 1976, it was added to the National Register of Historic Places.