Quite a few countries, Italy for example, will either sell you a castle for dirt cheap or just give it to you, as long as you promise to restore and maintain it.
Which is, to be clear, an absolute pain in the ass, since those castles have very strict restrictions about how to repair and upgrade them, materials and even companies you’re allowed to use, etc. Not to mention they’re a bitch to heat in the winter.










-Sir Terry Pratchett, Unseen Academicals