Hi Torben,
is there a Pharo port of Code City?
Not that I am aware of.
I am wondering because the use of VisualWorks Smalltalk and the license restrictions that come with it make it impossible to use Code City in a commercial setting (if I understand it right).
I could not check what is the license of CodeCity. If it is open source, and you already have VisualWorks, then you should be able to use it without problem.
Cheers, Alexandre