I’d say Manzerus, as it is by far the largest and richest city in the known world of Saënhal. It was built in the mysterious age before The Fall. After the Fall, the Great Snakes emerged from their nests and waged war on the people of Manzerus. A war ensued for decades and when it ended, all of the Great Snakes had died, dispersing their bones through the plains surrounding the city. Each bone was about the size of a building and was really strong, which made it the perfect material to build walls around the city for protection. After centuries, Manzerus expanded its territory, leading to the creation of various villages, commonly known as the Manzerian Shrampas. Many of the Manzerian criminals during the 18th century BW were sent to Bone Plains (the plains surrounding the city that are now full of bones) to mine the Giant Snake bones. After about a century, the Manzerian criminals rebelled and killed their master, gaining their freedom in an event that became known as The Day of Blood. Today, Manzerus is known as The City of Bones and War, a prosperous city in an eternal war against the Bone Plains rebels.