A) A very dangerous place where reality essentially farted. ICly going there is tempting being torn to bits for almost any character. It's not a good idea to go there unless it's for a TP.
A) The place where the entire Multiverse started, located at the center of the Volatile Wastes. If it isn't a TP, you have no chance of getting there whatsoever.
A) The capital of the Union. It's a super-city that takes up most of the Eastern Seaboard of one iteration of North America.
A) The capital of the Confederacy. It's a super-city that takes up the entire Korean peninsula of one iteration of Asia.
A) The Void is a massive space-like construct which fills the entire superplanet of the Multiverse. Essentially it's the same as space, except unprotected people can survive in most parts, at least for a limited time, and it's possible to breathe in most areas.
A) Fiddler's Green is a neutral area/resort with enforced non-combat protection systems. One can go there without fear of being attacked. Those who attempt violence will be ejected to a safe place outside the area.
A) A neutral area with enforced non-combat protection systems. Unlike Fiddler's Green, it's not really a resort area, more a place with abandoned ruins as well as some civilization. It's possible to settle there. Those who attempt violence will find the violence simply doesn't work as intended. There are some monsters and the like there, though the non-combat systems will not prevent self-defense from these.
A) 'news map' - beware, it's somewhat out of date.