Looking them over, the one I'd most like to visit is Shakespeare & Co. Antiquarian Books.
The photo directly above reminds me of all the used bookstores I so often frequented on wondrous weekends of literary exploration. I could spent hours in one small section of a book-crammed aisle like that, lost in the land of paper and ink, and forgetful of everything going on in the outside world. What I wouldn't have given to spent every spare moment in such places. I sometimes still fantasize of owning such a store, and with my own collection, purchased over many years, I would probably have a good beginning to an inventory. If, that is, I could bear to part with any of my precious volumes.