Dubois-Sarles Octagon - Credit: Wikimedia Commons
The Dubois-Sarles Octagon is an octagon house located on South Street in Marlboro, New York, United States. It was listed on the National Register of Historic Places in 2002. As of 2018 it was only one of 15 eight-sided houses left in New York State.Marlboro's Dubois-Sarles octagon house a classic testament to design Retrieved January 21, 2019 Read more on Wikipedia
Source: en.wikipedia.org