That's the Arizona Stadium, the school's football stadium. It seats about 45,000, about average size for a large stadium in a large school. This is the view from where I'm sitting at the library, atop the 5th floor.

I'm here to work on a couple of strips for the newspaper.

Another view from my right side. Can also see Tucson and its Tucson Mountains behind it. Note the "A" mountain on the left side, in honor of the UA.