Comparing to online bookstore, the physical bookstore is redundant (difficult to search the specific book). Interestingly, due to the redundancy, you might meet the books which you did not konw in the same category.
Especially, in Japan, the new books or popular books are always placed in the noticeable position. The old but classic ones sometimes have couple of copies. These kinds of “analog” imformation might give you a hint on how the book seller considers about books.
Therefore, here is my engjoyment of visiting a physical bookstore.