>>725067393
I'd say that I certainly do live in a more interesting area than most. Especially in the past few years the excessive rain has unearthed masonry in places you'd least expect it. What could be retconned as part of a network of cisterns, entries to old sewers and abandoned, external cellars before, now clearly connects to structures hidden beneath vineyards. I've since found a couple (drawn and even photographed) postcards dating back to the 1800's and early 1900's displaying beatifully fortified riverbanks, streets and hillside mansions where there are none anymore and no mention in any of the "curated" archives. Local historians become hostile when you ask them about any of it.
I am convinced the history of this area is 60% fabrication, 20% well-intentioned guesses and 20% out-of-order patchwork. It hasn't even been ravaged by war according to the offical city annals, so there's no good explanation for why it looks so ramshakle and rundown, compared to what it once looked like.
Much less why the masonry on the hills has been abadoned -- it's the kind of massive, durable masonry for which you don't haul material uphill, if you don't have a good reason and don't want it to last and get used tor centuries.
TLDR: Agriculture, vineyards, natural reserves etc are ideal to turn places into out-of-bounds areas inaccessible to prying eyes and especially more sophisticated technology.