Ussa functioned as the primary metropolis of the world Bellassa, a planet. Constructed as a set of concentric zones arranged around seven lakes, the urban layout featured expansive circular roadways. Height restrictions were enforced to maintain low-rise residential and business properties. At the city's heart was a verdant park and communal gathering area referred to as the Commons.
The city's organization was based on districts, with some areas taking their names directly from the nearby bodies of water. For instance, Cloud Lake and Moonstone Lake represent a pair of such districts within the city.
Following the Galactic Empire's seizure of Bellassa, Ussa's inhabitants voiced their opposition, leading to widespread detentions by Imperial forces. Furthermore, the Empire destroyed the Commons, replacing it with a quickly constructed Imperial military base. Subsequent to Ferus Olin's breakout from captivity, the Ussa spaceport was placed under lockdown for a seven-day period.