Re: Archenemy
That's alright. There are some people (for instance most comicbook writers in need of a location) who forget the city exists. So not remembering some political history is a minor thing.
Something like that could work although it should be kept to a minimum. Too many reports and sightings and the general public as well as it's leaders start to look like idiots for not believing.
It would make for a good story as long as it wasn't magical. Make it an object of great religious or cultural significance but nothing "beyond" that. In my opinion the less extra ordinary situations the better. Have this world set just slightly different than our own. I'm not saying the weres should have a scientific basis (in point of fact I would prefer if their method of creation were kept a mystery) but I see magic as too much of a game changer if that makes any sense.