I had a lot of ideas for the city of Argia. I decided to experiment with different types of architecture inspired by graves I took photos of from Pére Lachaise Cemetery, photos I took in Venice and also some photos I found online of Cappadocia. I was also considering what lighting this city would have so I looked at cenotes in Mexico where sunlight or moonlight might be able to shine onto the city. I also remembered something about 'glow worms' when I watched Planet Earth a while ago and thought it'd be an interesting idea.
I think glow worms could work well with the unsettling atmosphere of this city as it would add a of damp, gross feeling (they secrete mucus beads/strands to catch pray using bioluminescence). They also glow blue which would keep the gloomy mood. If I imagine the inhabitants, I can picture them farming the glow worms (similar to silk worm farming maybe) then sticking them on walls for valuable light.