A tight-packed slum city one million strong, the only city on Sig V.
Cuidad Uno is the last populated city remaining on the planet Sig V. It is a cluttered mess of architecture contained under a solar-dome designed to hold tens of millions but now holding a mere million.
It is a lawless and unkempt city, with only so many people able to support the aging infrastructure.
In a word, Cuidad Uno was a slum.
In two, it was a ghost town.
In many more it was good intentions meets bad circumstance, a shell of a city containing only scavengers, freelancers, survivors, and those who catered to them. It was in the awkward pubescent stage between an abandoned ruin and an earnest settling, which left it... empty.