Day 788

This circa-1864 structure, "one of a few surviving frame houses in Harlem which date from the period in the city's history when Harlem was still a rural village", is said to feature one of New York's earliest mansard roofs, predating by a few years "the mansard mania of 1868 to 1873 [which] swept over New York with a peculiar incandescence, but then went out like a guttering candle." (The roof is referred to as a mansard by many architectural sources more knowledgeable than me, but I don't think that is an accurate description, as the roof does not appear to be hipped.) You can see a couple of old photos of this building, as well as one interior shot, here.