This is Hogwarts.
This was the closest image I could find on google, but believe you me, it is even better in real life. It has a wrought iron spiral staircase leading to what looks like the restricted section of the library where they keep all the dark arts books. It has beautiful arches. The entry has this incredible peacock stained glass window. I may never leave.
This may make it impossible to earn my PhD, but my inner witch will be so happy.
edit: I had to add another photo.
Gryffindor common room (with slightly more study tables than I usually imagine it with)!!! Hello!!!