Istanbul is a beautiful city located in the Eurasia region (Europe and Asia). The background of the name Istanbul is derived from Constantinople, which means the city of Constantine. In 1770 AD, Ottoman Sultan Mustafa III ordered the name of Islambol to be struck on all the coins of the city, and this made it popular. In 1930, after the Republic of Turkey was approved, the Turkish Post Office chose the name Istanbul for it. Istanbul is known as a tourist city that has higher economic aspects than other Turkish cities . Also, it is known as the most populous city in Turkey in 2018. Its approximate population is 15,067,724. The area of Istanbul is 1539 cubic meters.

Istanbul[b] is the largest city in Turkey, straddling the Bosporus Strait, the boundary between Europe and Asia. It is considered the country's economic, cultural and historic capital. The city has a population of over 15 million residents, comprising 19% of the population of Turkey,[3] and is the most populous city in Europe[c] and the world's fifteenth-largest city.