Board Thread:Suggestions forum/@comment-27392198-20170102101900

"Now they had gone far into the Lone-Lands, where there were no people left, no inns, and the roads grew steadily worse. Not far ahead were dreary hills, rising higher and higher, dark with trees. On some of them were old castles with an evil look, as if they had been built by wicked people."

The Hobbit

Now although it says in the What Not to Suggest page This is only mentioned once in the Hobbit and seems likely to have been overlooked as I have seen no mention of them on the wiki. It does have Rhudaur castles but these are little more than ruins and hardly recognizable as castles. Also these ancient castles are not major and would be scattered over the Lone-Lands. The castles should only be on hills as it does explicitly mention that fact. How big or how much loot should be in these castles I leave to Mevans. 
 * Anything actually mentioned in Tolkien's writings on Middle Earth that would still be present in the Third Age, including all races, factions, characters, regions, structures, weapons, items, as these are all planned already and have been suggested far too many times before.