Jericho is the oldest city in the world, just as the Inca civilization is the richest and most famous civilization in the world. It is thought that the ancestors of those who lived in Jericho were nomads. Leaving the nomadic life, they settled in Jericho. At one time all the people of the world were nomads. People started living in places where the amount of wealth was more. This is how the ancient cities were built. Many cities have been born in this world since the creation. These ancient lost civilizations are still alive in people's minds with their own mysterious stories. The city of Jericho, which is more than 800 years old, was discovered by the English archaeologist Dr. Kathleen Tell. This underground city of Jericho was surrounded by a wall. The city was located in an oasis north of the Dead Sea. However, as far as is known after the discovery of the city, it seems that there were two to three thousand people living in this city. This very small town was 274 yards long and 185 yards wide. It is also known from the city of Jericho that at that time houses were made using clay bricks and lime.