This is the backside of a Lafayette Square mansard on Lafayette. Lovely, isn't it? This was the backdrop of a birthday party/BBQ I recently attended (I was in the neighbor's backyard). Note the mansard and brackets wrap around the side and back of the house.
Most St. Louis 2nd Empires feature the decorative roof and bracket only on the front of the house facing the street. I suspect the original Victorian homeowners of this maison could afford to show off with the all-the-way-around expense of the roof/bracket combo.
I appreciate that 125 years later I was able to enjoy their hard work and money spent at a nice Memorial Day party drinking beer and watching kids play.