Beyazit Sahaflar Bazaar is the booksellers part of the larger Bazaar, and a very good place to find…read morea book by literature Nobel Prize winner Orhan Pamuk. Most of the books are in Turkish, but there are all sorts of languages available. The architecture is interesting a combination of Byzantine and Ottoman, it's right next to the Istanbul University. Not a popular tourist site, it's even less crowded weekdays and in the off season. You can meet nice cats here.