Jericho, Palestine - this is the oldest city on the planet, as it is believed to have been founded 10,000 years ago. Second oldest is Damascus, Syria. It is considered the oldest capital in the world and one of the most picturesque Arab cities. The third city is considered Byblos (now Jbeil). This city was located to the north of the capital of Lebanon, Beirut, and has been known since the 4th millennium BC. And next is Aleppo, Syria. Many sources date the foundation of Aleppo between the 6th millennium BC and the 3rd millennium BC. Finally, one of the oldest city is Susa, Iran. It is a mysterious city and one of the most exotic in the Middle East.