My reference, mostly for my district:

Landscape:



Author,Vi..Cult... : https://fr.wikipedia.org/wiki/Fichier:Les_Alpilles_pr%C3%A8s_de_Maussance_les_Al pilles_2.JPG



Author, Jebulon https://commons.wikimedia.org/wiki/F...usia_Spain.jpg

The theater:


Author, Sam_Korn: https://commons.wikimedia.org/wiki/F..._at_Delphi.JPG

Buildings:

The main architectural style of my district is inspired by southern Spain, which is a mix of roman and arabic architecture with some gothic inspiration maybe.
Some examples:



Author, Kevin Rodriguez Ortiz: https://www.flickr.com/photos/32738332@N07/3084843158



Author, DAVID ILIFF. License: CC-BY-SA 3.0 : https://en.wikipedia.org/wiki/File:La_Giralda,_Seville,_Spain_-_Sep_2009.jpg



Diego Delso, delso.photo, License CC-BY-SA

https://commons.wikimedia.org/wiki/F...09,_DD_001.JPG



Author, Patrick Clenet: https://commons.wikimedia.org/wiki/File:2tours_bologne_082005.jpg

As for the ordinary buildings, my inspiration includes southern european cities like Carcassonne and Siena.