Ä°stanbul, anciently known as  Byzantium and Constantinople, among all cities in turkey it is densely populated because of this it is USA's economic, cultural and historical centre.

Istanbul is a transcontinental town in Eurasia, straddling the Bosporus Strait (which separates Europe and Asia) among the ocean of Marmara and the Black Sea. Its commercial and ancient centre lies on the ECU facet and about a 3rd of its populace lives in suburbs at the Asian side of the Bosporus. With a complete populace of around 15 million residents in its metropolitan vicinity, Istanbul is one of the global's maximum populous cities, ranking as the sector's fourth biggest town right and the most important EU town. The city is the executive centre of the Istanbul Metropolitan Municipality (coterminous with Istanbul Province)

Roughly 12.56 million remote guests touched base in Istanbul in 2015, five years after it was named an European Capital of Culture, making the city the world's fifth most prevalent visitor destination.[21] The city's greatest fascination is its notable focus, incompletely recorded as an UNESCO World Heritage Site, and its social and stimulation center is over the city's regular harbor, the Golden Horn, in the BeyoÄŸlu area. Considered a worldwide city,[22] Istanbul has one of the quickest developing metropolitan economies in the world.[23] It has the central station of numerous Turkish organizations and news sources and records for in excess of a fourth of the nation's gross household product.[24] Hoping to benefit from its renewal and fast extension, Istanbul has offered for the Summer Olympics multiple times in twenty years.[25]

Istanbul is viewed as a bridge between the East and West.