This building stands on Scarborough Road right where it intersects with the Old Croton Aqueduct. It’s seems to be used for storage by the town Department of Public Works. I don’t know if this was its original purpose. As you can see it’s not in the best of shape.

Taken with a Panasonic Lumix GF-1 and Lumix G Vario 45-150mm f4-5.6