Supposedly Teddy Roosevelt gave a speech from the balcony. I can't find any balcony, unless it's that thin protrusion on the second floor. He must have squeezed out a window.
I've always liked this building - plain-spoken and honest, with two wings on a hinge. Hancock Bros. work; they were responsible for so much of Fargo's appearance and character. If you could interview them now, you wouldn't know where to start - except, perhaps, by asking why one row of windows in the hinge are bricked up.
Probably the bathroom. Doubt they were happy about it.