Canthan Ambassador

The Canthan Ambassador will sell you a Guild Hall in exchange for a Celestial Sigil. You can preview several Halls before making your choice.

Location

 * The Battle Isles
 * Great Temple of Balthazar
 * Tyria (Prophecies Campaign)
 * Kryta
 * Lion's Arch (on the ship near Jiaju Tai)
 * Cantha (Factions Campaign)
 * Kaineng Center
 * Elona (Nightfall Campaign)
 * Kamadan

(Also used for ferrying to Lion's Arch).