One more entry from Pittsburgh. Take a visit to PPG Place in downtown Pittsburgh.
From the Smithfield Street Bridge - PPG Place is recognizable by the glass gothic influenced towers
Pittsburgh Plate Glass
PPG Place in Pittsburgh is home to six similar buildings, all constructed of glass. I felt like I was in Gotham or some imaginary land, particuarly because all of the buildings reflect each other and it’s feels like you are in the center of a fortress. I strolled around on a Saturday and found most everything to be closed, but the PPG website indicates that there is a skating rink in the winter and a fountain (where swimming is allowed!) in the summer. Due to the lack of activity, I spent my time looking up and taking photographs.
A fortress, really.
These buildings are not historic, but the PPG Place website includes architectural information, if you are interested. True to Pittsburgh fashion, this neogothic collection of buildings is next to typically historic masonry buildings. One last juxtaposition because they are my favorite:
Glass & Masonry in Pittsburgh
Preservation in Pink 