Büyükdere Avenue Büyükdere Avenue Büyükdere Avenue () is a major avenue which runs through the districts of Şişli (Esentepe quarter), Beşiktaş (Levent quarter) and Sarıyer (Maslak quarter) on the European side of Istanbul, Turkey. It begins at Şişli Mosque and runs in an eastward direction partly under the viaduct of the inner-city motorway O-1 through Mecidiyeköy, Esentepe, until reaching Zincirlikuyu; where it joins with Barbaros Boulevard and turns northward passing through Levent, Sanayi Mahallesi, Maslak and by the Fatih Forest, ending at the Hacıosman Slope on the Sarıyer district border. Its total length is . From Zincirlikuyu to Maslak, it forms a
Commercial district a city is the specific area of either a larger CBD or downtown or separate zone and would typically house a stock exchange or several bank headquarters. Likewise, city centre is sometimes used as a synonym for CBD or downtown, but often the geographical centre of a city not a commercial district. Often the centre of a city in older cities has many historic, institutional, or cultural areas. Most languages do not have a direct cognate for commercial district, but will have a related term such as the French "quartier d'affaires" ("business quarter"), or the Japanese "shōtengai" (literally, "commerce shop