It's supposed to be very functionally similar to the one in Ireland.
You mean Tír na nÓg. And no, it does not:
The Sylvestrines erected a massive spirit barrier (Force 8 ) around the area in 2035, and maintain it to this day along with patrols of watchers.
It was there to keep the spectres
in, not people
out. You could go there and loot the city all day long while "killing" ghosts that would return anyway. No need to knock the barrier down and risking retribution by the Sylvestrines.
Since you seem new to this: Spirit Barriers is a variant of Astral Barrier limited to spirits. While Astral Barrier only affected astral and dual beings, Spirit Barrier only affected Spirits, so even astrally perceiving awakened could cross it just fine. (Not that it's a good idea to walk around like that near Auschwitz.)
Again, that's a rumor.
Unfortunately, it sure doesn't sound that way.
It should have been villagers. I haven't read the final version, but it was supposed to be all natives, not prisoners.
Unfortunately, it's mostely the prisoners that turned into ghost, sprectres and the like:
The city of Oswiecim stands right next to the Auschwitz-Birkenau, the Nazis' largest concentration camp. For over twenty years after the Awakening, the ghosts of this camp's victims drove all life from this region, occasionally haunting nearby areas and even Krakow as well.