These two buildings, like many in the Cultural District, are going residential. Though the styles are radically different—the McNally Building light and classical, the Bonn Building heavy and Romanesque—they are only three years apart: the McNally building was put up in 1896, the Bonn Building in 1893.
Penn Avenue is a very narrow street, and getting a picture of the whole front of a nine-story building involves a lot of fiddling, most of it done by the Hugin stitching program automatically. Thus the picture is a bit fuzzy toward the top.