Dresden Files: Boston
You can believe me or not but the entire town of Salem, Mass is bricked off from the Nevernever. I think that’s the best way to describe it. You can get through from the mundane world but if you do, you’re never coming back. Those that do make it are stark raving mad.
If you try to enter from the Nevernever, thinking that you can get around that easily, you’re wrong. You’re going to waste your time looking for something that just doesn’t exist in the spirit realm.
Fae avoid the town and I hear they feel nauseous within the city limits. The White Council has an outright ban on going there. Wizards that violate this edict usually get away with it though, the town is full of “witches”.
Most people refer to Salem as the Eighth Law of Magic.