The Known Planes of Existence as mapped by the Planar Cartographic Society

    Inner (Region)

         Air (Plane)

         Ash (Plane)

         Dust (Plane)

         Earth (Plane)

         Fire (Plane)

         Ice (Plane)

         Lightning (Plane)

         Magma(Plane)

         Mineral(Plane)

         Ooze(Plane)

         Radiance(Plane)

         Salt(Plane)

         Smoke(Plane)

         Steam(Plane)

         Vacuum(Plane)

        Water(Plane)

    Transitive(Region)

         Astral(Plane)

            Elserryn Cluster (Area)

         Ethereal(Plane)

         Ordial(Plane)

         Shadow(Plane)

         World Serpent Inn(Plane)

         The Infinite Staricase(Plane)

    Prime Material(Region)

         The Plane of Incandescence (The Phlogiston) (Planes)

         The Infinite Planes of the Starry Void (Wildspace) (Plane)

    Outer (Region)

         Infinte Layers of The Abyss (Plane)

            Layer 1: Plain of Infinite Portals

                 Broken Reach (trading keep run by Red Shroud)

                 Gallowsgate

                 Razorforge

                 Styros

                 Lakes of Molten Iron

                 Tower of Chyrin the Succubus

            Layer 2: Drillers’ Hives

            Layer 3: Forgotten Land

            Layer 4: Grand Abyss

            Layer 5: Wormblood

            Layer 6: Realm of a Million Eyes (Great Mother’s realm)

            Layer 7: Phantom Plane (Sess’innek’s realm)

            Layer 8: Skin-shedder

            Layer 9: Burningwater

            Layer 10: That Hellhole

            Layer 11: Molrat

            Layer 12: Twelvetrees

                 Ship of Chaos

            Layer 13: Blood Tor (Beshaba’s & Umberlee’s realm)

            Layer 23: Iron Wastes (Kostchtchie’s realm)

            Layer 45, 46, 47: Azzagrat (Graz’zt’s realm)

                 Argent Palace

                 Zelatar

                 Zrintor, the Viper Forest

            Layer 66: Demonweb Pits (Lolth’s realm)

            Layer 67: Heaving Hills

            Layer 69: Crushing Plain

            Layer 70: Ice Floe

            Layer 71: Spirac

            Layer 72: Darklight

            Layer 73: Wells of Darkness

            Layer 74: Smaragd (Meershaulk’s ralm; Ramenos’ realm)

            Layer 88: The Gaping Maw (Demogorgon’s realm)

            Layer 113: Thanatos (Kiaransalee’s realm, now Orcus’ realm again)

                 Forbidden Citadel

                 Naratyr

            Layer 142: Lifebane (Chemosh’s realm)

            Layer 181: Rotting Plain (Laogzed’s realm)

            Layer 193: Eshebala’s realm

            Layer 222: Shedaklah (Juiblex’s realm; Zuggtmoy’s realm)

            Layer 241: Grankhul’s and Skiggaret’s realm

            Layer 274: Durao (gateway)

            Layer 303: Sulfanorum (smoking realm)

            Layer 333: Hiddukel’s realm

            Layer 377: Plains of Galenshu (armanite realm)

            Layer 399: Worm Realm (Urdlen’s realm)

            Layer 400: Woeful Escarand (nalfeshnee realm)

            Layer 422: Yeenoghu’s realm

            Layer 487: Lair of the Beast and Mansion of the Rake (Kanchelsis’ realm)

            Layer 503: Torremor (Pazrael’s realm)

                 Onstrakker’s Nest

            Layer 524: Vaprak’s realm

            Layer 586: Prison of the Mad God (Diinkarazan’s realm)

            Layer 600: Endless Maze (Baphomet’s realm)

            Layer 643: Cavens of the Skull (Kali’s realm)

            Layer ?: Elenur, The Elemental Wastes (MGP)

            Layer ?:Ic’vnigh, The Swarming Jungle (MGP)

            Layer ?:Necrodus, The Dead Lands (MGP)

            Layer ?:The Shadow Fortress (MGP)

            Layer ?:Zahhak, The Ashen Waste (MGP)

            Layer ?:The Warped Mirror (MGP)

            Layer ?:The Exile Lands (MGP)

            Layer ?: The Putrescent Gorge (MGP)

            Layer ?:The Training Ground (MGP)

            Layer ?:The Foundation (MGP)

         Acheron (Plane)

             Avalas (Layer)

             Thuldanin (Layer)

             Tintibulus (Layer)

             Ocanthus (Layer)

         Arborea (Plane)

             Arvandor (Layer)

             Aquallor (Layer)

             Pelion/Mithardir (Layer)

         Arcadia (Plane)

             Abellio (Layer)

             Buxenus (Layer)

         Baator (Plane)

             Avernus (Layer)

             Dis (Layer)

             Minauros (Layer)

             Phlegethos (Layer)

             Stygia (Layer)

             Malbolge (Layer)

             Maladomini (Layer)

             Cania (Layer)

             Nessus (Layer)

             Feuerring, Gateway to Hell (Region- MGP)

        Beastlands (Plane)

            Krigala (Layer)

            Brux (Layer)

             Karasuthra (Layer)

        Bytopia (Plane)

             Dothion (Layer)

             Shurrock (Layer)

        Carceri (Plane)

             Othrys (Layer)

             Cathrys (Layer)

             Minethys (Layer)

             Colothys (Layer)

             Porphatys (Layer)

             Agathys (Layer)

        Elysium (Plane)

             Amoria (Layer)

             Eronia (Layer)

             Belierin (Layer)

             Thalasia (Layer)

        Gehenna (Plane)

             Khalas (Layer)

             Chamada (Layer)

             Mungoth (Layer)

             Krangath (Layer)

        Gray Waste (Hades) (Plane)

             Oinos (Layer)

             Niflheim (Layer)

             Pluton (Layer)

        Limbo (Plane)

        Mechanus (Plane)

             Delon-Estin-Oti (Layer)

        Mt. Celestia (Plane)

             Lunia (Layer)

             Mercuria (Layer)

             Venya (Layer)

             Solania (Layer)

             Mertion (Layer)

             Jovar (Layer)

             Chronias (Layer)

       Outlands (Plane)

            The Spire (Realm)

                 Sigil (Town/City)

                 Automata (Town/City)

                 Bedlam (Town/City)

                 Blight (Town/City)

                 Fortitude (Town/City)

                 Curst (Town/City)

                 Ecstasy (Town/City)

                 Excelsior (Town/City)

                 Faunel (Town/City)

                 Glorium (Town/City)

                 Hopeless (Town/City)

                 Ribcage (Town/City)

                 Rigus (Town/City)

                 Sylvania (Town/City)

                 Torch (Town/City)

                 Tradegate (Town/City)

                 Xaos (Town/City)

                 Plague-mort (Town/City)

           Realms (Category)

                 Caverns of Thought (Realm)

                 Court of Light (Realm)

                  Loom of the Weaver (Feature/Site)

                   Hall of Tests (Feature/Site)

                    Flame (Feature/Site)

                 Dwarven Mountain (Realm)

                     Ironridge (Feature/Site)

                     Strongale Hall (Feature/Site)

                     Soot Hall (Feature/Site)

                     Deepshaft Hall (Feature/Site)

                 Gzemnid’s Realm (Realm)

                 Hidden Realm (Realm)

                 Hidden Wood of Obad-Hai (Realm)

                 Inner Self (Realm)

                 Library of Lore (Realm)

                 Mausoleum of Chronepsis (Realm)

                 Palace of Judgement (Realm)

                 Realm of the Norns (Realm)

                 Semuya’s Bog (Realm)

                 Sheela Peryroyl’s Realm (Realm)

                 Thebestys and Thoth’s Estate (Realm)

                 Tir Fo Thuinn (Realm)

                 Tir Na Og (Realm)

                 Tvashtri’s Laborarory (Realm)

            Rilmani Territory (Category)

                 Fortress of Concordant Opposition (Realm)

                 Misted Camps (Realm)

                 Sum of All (Realm)

            Indep Villages (Category)

                 Goldheart (Realm)

                 Talons of Ice (Realm)

            Hinterlands (Realm)

             Geographical Features (Category)

                 Dorrin’s Run (Feature/Site)

                 River Ma’at (Feature/Site)

        Pandemonium (Plane)

             Pandesmos (Layer)

             Cocytus (Layer)

             Phlegethon (Layer)

             Agathion (Layer)

       Ysgard (Plane)

             Ysgard (Layer)

             Muspelheim (Layer)

             Nidavellir (Layer)

    Other (Region)

         Far Realm (Plane)

         Demiplane of Dread (Ravenloft) (Plane)

         Astrum Draconis (Plane)