Try Leven Miniatures. Their Mediterranean buildings will probably do, as will one or two of their churches. http://www.levenminiatures.co.uk/index.html

Thanks Trebian!

We seen those, but was not sure it could be good... and We looking for a typical south american church.

:-)

Based on what I saw in Peru, Chu10 from the Churches range isn't a bad match for cathedral/monastery style buildings, and Chu9 will do for a more local church.

Irregular ministures do a Spanish/Italian/Mexican village in their 6mm range, that will do as well, in the "scenics and accessories". Have a look at "The Alamo" and "Roman Mediterranean" pieces in the same range.

You balso need something like this for your Officianas, but they're really expensive: 

https://www.walthers.com/nansen-street-models-division-of-n-scale-architect-american-windmill-etched-brass-kit-1-5-8-tall-x-3-8-wide-4-x-9cm 

Thanks again Trebian!

Indeed the latter is too expensive!

:-)