Minor Locations of the Inner Planes
by Håvard- PLANAR CITIES AND REALMS
- City of Pandius see WotI. Adjacent to the Moon of Matera. City of the Immortals
- City of Brass Gaz2, BECMI/RC (see also my Plane of Fire map)
- City of the Dead (Limbo location) - Mentioned in VotPA. There are actually multiple Cities of the Dead, though one was visited in the series.
- Yak Brothers Camp - see Ethengar Gaz. Ethereal Plane
- City of Tuma - See B8. Likely located on the Ethereal Plane
- Moon, Kingdom of - See x5 - see X5 Master of the Desert Nomad. Could be the same as the White Realm (see Below), The City of Pandius, or Myoshima). Halflings can weave nets from the Crucible of Blackflame to harness the power of moon beams.
- Radiant Citadel - Not canonically part of Mystara cosmology, but the 5E book does reference Mystara. Located on the Ethereal Plane
- Haven - See B3. Shifts between the Plane of the Feywood and Karameikos.
- Caer Ambriel - See M3. Part of the Green Realm.
- The White Realm (The Moon) - See M3. Connected to the Moon. Could be the same as the Kingdom of the Moon from X5.
- The Green Realm ("Venus") - See M3. Likely the same as the Fewood/Dreamlands
- The Red Realm ("Mars") - See M3 - Ruled By Anator. Connected to the Plane of Fire?
- The Blue Realm - See M3 - Ruled by King Valeatros. connected to the Plane of Air?
- The Yellow Realm ("The Sun") - See M3 - Home to Solluxes. See the Sun Gate above.
- The Black Realm - See M3 - A swamp like realm. Ruled by Silcharde. Also home to The Hag of Time (Zagriona). Connected to Limbo?
- The Rainbow Realm - See Bifrost, below
- The Isle of Night - See M5. Likely a reflection of the Isle of Dawn found on Limbo.
- The Shining Isles - See O2 Blade of Vengeance. Connected to the Feywood
- LESSER PLANAR LOCATIONS
- The Shelter: This is the place visited by the Shelter Scroll. Multiple such locations are likely.
- House of Zebulon: A place of shelter mentioned in X5?
- Skarda's Mirror: Described in X12
- The Maze: The place you are sent to by the Maze spell. Multiple such locations are likely.
- PATHWAYS AND GATES
- Moon Ladder - see X5 Master of the Desert Nomad. Leads to the Kingdom of the Moon.
- The Silver Staircase - See AC10 The Bestiary of Dragons and Giants
- Bifrost, The Rainbow Bridge - This is a Planar Nexus. Allows travel across the Prime Plane as well as between planes. Mentioned in M3 (As the Rainbow Realm), CM9 (as the Rainbow Bridge), Gaz10. Connected to spells like Prismatic Wall.
- World Mountain Gate - See Ethengar Gaz. Leads to the Ethereal Plane.
- The Eternal Stair - See CM8
- Yggdrasil, the World Ash - See Gaz7 - Outer Plane, Planar Nexus
- The Sun Gate - Leads to Plane of Fire. See M 4 Five Coins for a Kingdom. May be related to Yellow Realm (see below).
- The Hollow World Sun Gate - Leads to the Plane of Fire (HW boxed Set)
- Trader's Isle Gate - Minrothad Gaz - Leads to Plane of Air
- Heart of Dengar Gate - Leads https://www.thepiazza.org.uk/bb/viewtopic.php?t=31109.
- Honor Island Gates - lead from Ierendi to the Ethereal Plane and the Plane of Fire.
Note, I have not included every single location, especially those already referenced in the individual topics related to each of the elemental planes. I don't think we need to include every gate from Mystara in this list, but I did include some major ones, linked to the Inner Planes.