There are several tempting answers to this question. Narnia comes to mind. So does the Wizarding World, post-Voldemort, and the city of Amber, and the United Federation of Planets. But the one that occurred to me right away was Blackstock College, the school that provided the setting for Pamela Dean's Tam Lin.
Tam Lin is one of my favorite books, and while there are many reasons for this, one of the most important is how much the feel of Blackstock, as described, reminds me of Bryn Mawr. And there is a small part of me that wishes I could just live at Bryn Mawr forever. So I think I would feel right at home as a member of the Blackstock community, either as a student or as a member of staff.
As for what I would do when I arrived, I think the answer to that is quite clear: be a librarian. Right? I mean, how awesome would that be?
30 Days of... Project! Complete list of questions / Ask a question on LJ or on DW.
This entry is also posted at http://owlmoose.dreamwidth.org/509225.html. There are currently comments on DW.