Castel Ruin Structure

I think there should be a castel ruin structure in the plains biome or generated in a forest because the forest and the plains doesn't really offer that manny structures and the forest is usually just an anoying biome that everyone hates spawning in and infact most of the spawns of players seem to be in stone hills by taiga and forest biomes along with a plains. Three structures which really need some sort of structure to have in it over than a village. It could have skeletons walking around in there in certain rooms. Maybe there could be chests with dented iron gear (dented iron gear would be a new kind of iron that would become dented or rusted the longer used). Maybe there could be prizon cages and perhaps a village in the cortyard but an abbandoned one. Maybe there could be two new craftable things, Iron gates and drawbridges. The drawbride might need some sort of new mechanism to work. The chests could have rotten flesh and gold and maybe food. There could maybe be a moat with a new crocodile mob.