The Upright City was the colloquialism for the top half of the Public Sector of Titan Station. Known sections of the Upright City are the Medical Center, Waste Disposal area, Cassini Towers, the Titan Station Church of Unitology and the Concourse areas.
The name "Upright City" came from Dead Space: Ignition. When you took Path B, Franco Delille and Sarah Andarsyn chose to enter the Inverted City. Going down the elevator, they talked about whether or not the people who lived in the Inverted City called the Upright City the Inverted City. Sarah said that they would because down was where your feet are.
While walking down a hallway in the Inverted City during Path B, Sarah told Franco that she knew that the Inverted City was not as densely populated as the Upright City, but she knew that it should look more crowded than it did.
The Upright City was destroyed during the explosions that took place on the Sprawl after Isaac destroyed the Site 12 Marker.