as promised, here are some posts of the WIP on carcassonne city…
first of all here’s a 'global view of the medieval city as it is nowadays:
okay… next step is… to make this a nice 3D scene !!!
still WIP… here are some screens 
this is the ‘barbacane Saint-Louis’. Some things have to be reworked but most of things
are here
next is a ‘little’ tower called ‘tower of Berard’.
seen from behind ( sorry for the culling mess-up
)
and at last ( for the moment ) but not least, the citygate called ‘porte Narbonnaise’
seen from front and from back…
sorry non have it’s dirtmap yet
hope you like it
i didn’t show the few citywall parts i also made…
finally, here is what it looks like in unity3D…
this runs a 130fps for now… no doubt the donkey will be soon loaded 
happy blending !!!