I was struck by the different quality of light coming through one window pane on the stairwell in the building I work in. That pane must have been replaced at some time or other with a different shade of clear glass. I liked the lines and shadows I saw, also.
Eisenhower Hall is named for Milton Eisenhower, former president of the university and brother to the general and former president of the U.S.
At first I thought it was the use of SC. All the better because it's natural SC. Fabulous lines and patterns you've captured make this a terrific composition