As of November 11, 2012, the PSUPedia and its affiliated wikis have made the transition to read-only mode. While edits can no longer be made, we hope you will continue to enjoy the data collected by the community for years to come!
From The PSUPedia
Cities in Phantasy Star Universe are places where players may interact with each other, buy and sell Items at Shops and prepare for venturing out. Unlike Missions, and Pioneer 2 in Phantasy Star Online, cities are not instanced. In many ways they can be seen as the lobbies from PSO.
List of currently known cities