Baghdad has been among the most important cities of the Islamic world in the fields of trade, science and culture for centuries. It is the third largest city in the Middle East and is defined as the capital of Iraq. The city, built on two parts of the Tigris river, is known as the heart of Iraq. The city, which is home to many cultures, has a worldwide reputation for its culinary delights. The first place to visit is the Abbasid Palace. In addition, the ancient city of Babylon is among the very important works and the vines found in this area are among the seven wonders of the world. Areas such as Sharabiya school, Iraq national museum, Golden domed mosque and Babylon are among the places frequented by tourists.