Stairwell, Yale Museum of Art. Architect: Louis Kahn, built between 1951 and 1953. The Yale University Art Gallery was the first significant commission of Louis Kahn and his first masterpiece, replete with technical innovations. For example, he designed a hollow concrete tetrahedral space-frame that did away with the need for ductwork and reduced the floor-to-floor height by channeling air through the structure itself. Like many of Kahn's buildings, the Art Gallery makes subtle references to its context while overtly rejecting any historical style.
Here we see the stairwell, which is installed in a round concrete shaft, but is triangular. I will follow up later with a little more on this stairwell. Louis Kahn's last significant work is the Yale British Center which also has a stairwell installed in a concrete shaft.
People are not supposed to have cameras in this building. This was, unlike many of my photos, a complete outlaw job.
I had some issues getting my past couple of days processed. Sorry so late.