Located in the Asian side of Istanbul, on the north shore of the Sea of Marmara. Kadikoy is residential and commercial area and it is the cultural center of the Asian part of Istanbul. Its neighboring districts are Üsküdar to the northwest, Ataşehir to the northeast, Maltepe to the southeast, and Kartal beyond Maltepe.
The center of Kadıköy today is the transportation hub for people commuting between the Asian side and the European side of Istanbul across the Bosphorus. There is a large bus and minibus terminal next to the ferry docks. Ferries are the most dominantly visible form of transport in Kadıköy, and the central market area is adjacent to the ferry dock.
Kadıköy is a busy shopping district and it is Turkey's biggest food market, it has also an immense turnover of fresh foods and other products from all around Turkey, including a wide range of fresh fish and seafood, olive oil soap, and so on.
Kadıköy has many narrow streets filled with cafés, bars and restaurants, as well as many cinemas. Süreyya Opera House is a recent redevelopment of the same named historic movie theatre, and there are also many schools and branches of the most famous universities in Turkey.
Kadıköy has many houses from the Ottoman and some from Roman period which are hidden in its side streets. Some of them have been turned into cafés, pubs and restaurants, particularly serving seafood and rest of them waiting for restoration