From the Westchester (New York) Magazine (October 2004), "The Eight Wonders of Westchester," p. 71:
The extraordinary 134-year-old Armour-Stiner Octagon House in Irvington: You can see the red-and-pink painted structure walking along the Croton Aqueduct; the house resembles nothing you've seen before.
[via: Ditto at the NPL]