Unfortunately, Montevideo is very poorly represented, we don't have photogrammetry either, so little by little we are introducing objects from blender to try to give some points of the city a more realistic touch,that is free to download at 3dwarehouse.sketchup.com and that I have imported into MSFS!
in this pack: 
- CATEDRAL DE MONTEVIDEO
- EDIFICIO OSE
- EDIFICIO MIDES
- EDIFICIO BANCO REPUBLICA
- EDIFICIO BHU-DGI
- EDIFICIO LONDON PARIS
- AUDITORIO ADELA RETA
- PUENTE VIEJO DE LA BARRA SANTA LUCIA
- PLANTA DIARIO "EL PAIS" RUTA 1


all my addons from Uruguay complement perfectly with those from @unTopo