Fish (Balik) market (pazar). A pocket side side street next to Istaklal Street. This is where…read morelocals traditionally bought the sea food delicacies and necessities. Now, some of places you would find any fish have souvenirs, other food items, Fluorescent lit cafés. I found this on a tour with a fantastic guide by the name of Katerina. Check out the Culinary Backstreets Tour of Istanbul.