Like a heavy-duty iteration of New York City's Flatiron Building, the knife-edge end of the Courteen building seems to lead a parade of industrial architecture up from the 5th Ward.
In fact, the narrow end is the back side of the building. The front faces south, on Pittsburgh Avenue, and is rather tame by comparison.
The building's original owner went out of business in the 1960s. Not much seems to have been done with the property since then, but a lack of boards and broken windows indicates some form of use and occupancy. Its owner proposed a residential redevelopment in 2006 (see article linked below), but to date only minimal work on the building is visible, mostly along the roofline. Delays in commercial development are extremely common, however, especially in the financing stage; it could still be coming. Hopefully it won't involve chopping up those amazingly huge Cream City brick walls.