Board Thread:Wiki Discussion/@comment-5264386-20131118054134/@comment-5264386-20131121044748

@Neon: In the case of Pinwheel, you might be able to invade just inside the Catacombs/TotG cavern, and then go down the ladder to the boss arena, but I highly doubt this.

@Aften: A great arena would be the Colosseum in the Royal Wood where you defeat Artorias. Once the host discovers Kalameet, the boss for Royal Wood changes, allowing for people to invade you.