Well it might be very speculative....
But when I went through the main menu of OS2 I saw this image of a Harbour Area:
https://steamuserimages-a.akamaihd....C7C354BF5E6A1DD7210E4F5997A0093B8BEDE07/Could this be the place the party is heading to after Fort Joy? Is it perhaps Arx?
In any case this gives us a peak into the architectural style of atleast one place in the OS2 World.
