Granted, the building does predate the ADA.
And there are actual restrooms on the top floor itself, rather than in the stairwell (and so my co-worker's mother can take the elevator up to the 12th floor every time she needs to use the restroom).
But what in the hell could have made someone think that was a good design strategy?
(Related to restrooms, but not as offensive to me: It may have been changed since I was last in Ayres Hall, but the restrooms there used to be labeled "Men - Faculty", "Men - Students", "Women - Staff", and "Women - Students".)