What is the oldest city on Earth?

Could you please explain, in simple terms, what is considered to be the oldest city on Earth? Are there any archaeological findings or historical records that support this claim? Are there any ongoing debates or disagreements among scholars about which city truly holds this title? Furthermore, how does the age of a city contribute to its historical significance and cultural impact? Lastly, are there any other ancient cities that are similarly noteworthy and deserving of recognition?