Lore structures are not yet in the mod, both in Legacy and Renewed. They are planned, but for the far future; on most servers, players build them themselves, or paste structures from other maps. The only structures or cities you'll meet are randomly generated ones, except in Bree-land where the villages generate at fixed locations. In some places, however, the mod adds lore terrain features, like famous mountains (at Minas Tirith, Erebor, Mount Doom...) and a few lore structures (like the Ring of Isengard or the Rammas Echor around the Pelennor fields...)

At the moment no lore friendly structures are in the mod except the Rama’s Echor and the ring of Isengard (Orthanc not included). Sadly the only things you can find are randomly generated villages towns and other structures. If you look on the planned features page on this wiki you will see. You could try genstructures but I didn’t like that much. Also named hills and mountains that are in LotR are present which is helpful for creating lore friendly builds. I don’t think structures like Minas Tirith or Helms deep will be added for a while. That said I would continue to try the mod it is amazing!

Aldan Tanneo literally didn’t see your post. Sorry for saying the exact same things. :)