Ok have added walls to Rhodos, Syracuse, Jerusalem, Arverni, Treverii and Epirus cities. See screens below for examples in game
Additional cities that have walls in Grand Campaign Map. Please note the walls do not show on campaign map but they are 100% in game:
Tyros / Seleucid Faction
Jerusalem / Egypt Faction
Persepolis / Persia faction
Baktria / Bactria Faction
Bagacum / Nervii Faction
Ancrya / Galatia faction
Alabu / Cimbri Faction
Selestica / Breuci Faction
Tarsus / Seleucid faction
Susa / Persia Faction
Patatvium / Veneti faction
Belz / Lugii Faction
Bibracte / Aedui faction
Cyrene / Lybia Faction
Octudoron / Helvetii Faction
Nisa / Parthia Faction
Lilybaeum / Carthage Faction
Syracuse / Syracuse Faction
Patavium / Avernii Faction
Rhodes / Rhodes Faction
Nemessos / Arverni Faction
Merv / Aria Faction
Odessos / Odrysian Kingdom faction
Ephesos / Sardes
Trevororum / Trevii Faction
Appolonia / Epirus Faction
Malva / Getae faction
Thaspus / Lybia Faction
Gor / Persia Faction
Salamis / Cyprus Faction