Explore Ancient Civilizations:
Jericho is not only the Oldest still-occupied city in the world but also the lowest below sea level at 846 feet.
https://www.historyofisrael.com/city-of-jericho.html
https://www.express.co.uk/news/world/2065164/world-lowest-city-846ft-incredible-11000
Baghdad—located along the Tigris River—by visiting a city built during the 8th Century on the foundations of the Akkadian, Babylonian Empire.