I was trying to find some sort of picture for what the outside could look like, and I found the weirdest things that could totally be modified to be leftovers from one of the wars against the Silver.
I’m also kind of partial to the idea of being situated on/adjacent to a dune lake (or a few). The spit of land between the ocean and the lake could be a good place to string the stick forts if those were a thing; accessible by land at low tide, by boat at high.
I’m also partial to the idea of lighthouses (having climbed a fair few), but with it also feeling like Thornmouth’s thing, maybe the modifications to the stick forts could involve doubling as tiny lighthouses like the little ones out in the middle of the water down in the Keys.
Also a fan of the word “archipelago,” so…I wouldn’t be mad if there was a string of islands involved? It could be interesting to have the guild home built out from the mainland and then sort of branch out around dune lakes and a close-enough-to-be-easily-accessible archipelago.