3. Aleppo, Syria – 8,000 years old

Located between the Mediterranean Sea and Mesopotamia is the most populated city in Syria with nearly 4.4 million citizens in its metropolitan area. Aleppo is undoubtedly one of the oldest cities in the world, already mentioned in Paleo-Babylonian times under the name of "Halab". While the ancient site is occupied by the modern city, it is hardly touched by archaeologists. The city was under Hittite (An ancient group of Indo-Europeans who moved into Asian Minor and formed an empire at Hattusa in Anatolia (modern Turkey) around 1600 BCE.) control until around 800 BC