Lord Lakely
Idea Fountain
A Celts/Zulu could have a unique Encampment, Ottomans/Malinese could have a unique Commercial Hub, Italians a unique Government Plaza/Pier.
Inca's are a slam dunk in terms of UI though. (Terrace Farm). Of the other options, I could see Celts getting a UI, depending on which angle they rep (e.g. A Scottish Celtic Civ could have brochs or dúns as UIs, a Gallic Celtic could have dolmen or menhirs, etc.)
So... last three civs: Inca, Celts and Ottomans? :
: 
Inca's are a slam dunk in terms of UI though. (Terrace Farm). Of the other options, I could see Celts getting a UI, depending on which angle they rep (e.g. A Scottish Celtic Civ could have brochs or dúns as UIs, a Gallic Celtic could have dolmen or menhirs, etc.)
So... last three civs: Inca, Celts and Ottomans? :

