I am interested in asking the following question, and would like some indication as to whether it is appropriate or not before I do. The question would be entitled something like 'Mathematical bookstores' and would ask for a list of bookstores that have a good selection of high-level mathematical books. The aim would be so that a mathematician travelling, or on holiday, can quickly check the list to see if there is a worthwhile book store that she or he could happily spend an hour browsing in.
I was inspired to ask this question by the Cambridge University Press bookshop, which I visited yesterday and where I greatly enjoyed browsing its eight shelves of mathematical books.