Modernist architects, as far back as Chicago's own Louis Sullivan, like to note that "form follows function." But just as often, I think, form follows lot size. This family jewel at 1865 N. Wilmot Ave. (at the intersection of Oakley and Cortland) makes the best of a narrow triangle: 
Unusual, but not particularly unpleasant to walk by from this angle. I like the front cylindrical component - it makes the lot seem much less angular. Walk by it on Wilmot, though, and the building jumbles: 
Maybe I'm just a sucker for symmetry, but the middle piece here threw me off. It feels like three disparate chunks glued together with mortar. But kudos to the building's designer for crafting the indented, and nearly hidden, roof deck. A good place to spy on neighbors.