イスタンブール is the largest city in トルコ and serves as a cultural and economic hub. It is uniquely positioned on two continents, アジア and ヨーロッパ, separated by the ボスポラス海峡. The city has a rich history, having been known as ビザンティウム and later コンスタンティノープル before adopting its current name. The city is famous for its stunning architecture, including the アヤソフィア and the ブルーモスク. イスタンブール is also known for its vibrant markets, such as the グランドバザール, where visitors can find a variety of goods, from spices to textiles.