Right smack across Broadway from Columbia University is the much smaller Barnard College. Originally a college for women, it may still be. But I know that male students from Columbia attend classes there as needed.
It’s small, compared with Columbia or most any other university that’s as well known. At most, it covers about four blocks although it may be deeper than it looks.
I went by it as just a lark to see how big it really was. I had done it a long time ago and I think it is about as small as memory serves. From what I understand, there are only a couple of thousand students enrolled. But since Columbia students can cross over, it makes the potential attendees much larger.
I passed by what I think is their main gate and noted that they had several privacy signs up. I felt at ease wandering around Columbia, but this place seemed a little more restrictive. So, I just kept walking.