Order Halls (or Class Halls) are a feature introduced in World of Warcraft: Legion. They are Class Order-based areas where players can hang out, similar to the Peak of Serenity for monks or Acherus: The Ebon Hold for death knights. As players of both factions will be present, they will also be considered asanctuary. They will also include the opportunity to recruit class-specific followersand potentially class-specific missions.
In Legion, each player will take charge of an Order Hall ¡ª a site of great power linked closely to a character¡¯s class and cause. The Order Hall will serve as each hero¡¯s base of operations ¡ª and a bastion of hope ¡ª during their journey to the Broken Isles. From there, players will send NPC followers on missions to help defend Azeroth from the demonic incursion... and forge and empower their artifact weapon into a Legion-felling force to be reckoned with.
Speculation is in italics.
Death Knight: Acherus (Broken Isles)
Demon Hunter: The Fel Hammer, Mardum (contested Burning Legion world fragment)
Druid: Dreamgrove, Val'sharah
Hunter: Trueshot Lodge in Highmountain; have special relationship with eagles there that unlocks a hunter-only flight network.
NPCs include: Hemet Nesingwary, Rexxar, Vereesa Windrunner, some Dark Rangers, Farstriders, andSentinels.
Mage: Hall of the Guardians in Dalaran (quests send you to Hillsbrad Foothills, Violet Hold, Icecrown Citadel)
Monk: Hall of the Seasons on the Wandering Isle; Technically this consists of the Temple of Five Dawns andMandori Village
Paladin: Sanctum of Light beneath Light's Hope Chapel (Eastern Plaguelands) via stairway
Priest: Netherlight Temple which looks to be part of Karabor
NPCs include: Alonsus Faol, Prophet Velen, and some Priestesses of Elune.
Rogue: Hall of Shadows in the Underbelly of Dalaran;