Captured with the Rodenstock 50mm Digaron lens and about 13mm of vertical shift to maintain the geometry (but several architectural features - setbacks and tapers in the building design - still make it appear to converge toward the top).

Pittsburgh's 42 story "Cathedral of Learning" houses offices and classrooms for the University of Pittsburgh. Completed in 1937, it took 11 years to construct. It remains the tallest academic building in the US.

The lobby is also gorgeous, and worth a visit.