Istanbul @ Travel Turkey

The city covers 25 districts of the Istanbul province. It is located on the Bosphorus strait, and encompasses the natural harbor known as the Golden Horn, in the northwest of the country. It extends both on the European (Thrace) and on the Asian (Anatolia) side of the Bosphorus, and is thereby the only metropolis in the world which is situated on two continents. In its long history, Istanbul (Constantinople) served as the capital city of the Roman Empire (330-395), the Byzantine Empire (395-1204 and 1261-1453), the Latin Empire (1204-1261), and the Ottoman Empire (1453-1922). The city was chosen as joint European Capital of Culture for 2010. The "Historic Areas of Istanbul" were added to the UNESCO World Heritage List in 1985.

The city has many architecturally significant entities. Throughout its long history, Istanbul has acquired a reputation for being a cultural and ethnic melting pot. As a result, there are many historical mosques, churches, synagogues, palaces, castles and towers to visit in the city.

The urban landscape is constantly changing. In the Greek, Roman and Byzantine periods, the city was largely made up of the historic peninsula of Constantinople, with the citadel of Galata (also called Sykae or Pera) at north, and Chrysopolis (Üsküdar) and Chalcedon (Kadıköy) at east, across the Bosphorus. These were all independent cities back then. The present City of Istanbul can be considered the metropolitan area of old Constantinople, encompassing every single settlement around the original city, and expanding even further with the establishment of new neighbourhoods and districts since the 19th century.