Talk:Player versus Player/@comment-4511886-20130209012011/@comment-5264386-20130209114444

There are a few precise locations that I know of:
 * The front of O&S's chapel (when in Anor Londo)
 * The very top of the stairs in the colosseum (when in Painted World)
 * Somewhere in the Blighttown swamps (I got invaded there once, so I don't know exactly).

Basically, you have to be prepared to be invaded at any time, in any area. That's the whole point of Dark Souls' PvP.