The Mists is the oldest thing in existence, the proto-reality that exists between the worlds, constituting the fabric of time and space that connects the multiverse together. Within the Mists are worlds (of which Tyria is just one), each with their own realities and histories, floating as islands in the ether. The Mists resonate from the worlds around them, forming bits of their own reality - islands of existence that reflect the histories of their worlds. Some worlds are enormous, such as the Underworld, the home of the dead; others are simply residences for powerful spirits or deities. At the center of the Mists is the Rift, and within the Rift is the Hall of Heroes, the final resting place of powerful and virtuous souls.
The Mists are accessible only through portals, most of which are temporarily made by channeling the power of a force within the Mists, such as the havrouns calling upon the Spirits of the Wild. There are a few permanent portals as well - these portals were created by the mage Lord Odran, including one in the Tomb of the Primeval Kings. Other known portals in the past included the Door of Komalie, Mouth of Torment, and on the Battle Isles; these four portals have become inaccessible over the past 250 years due to the rise of the Elder Dragons.
Currently, the only known fixed means of entering the Mists is within Lion's Arch, which is said to contain a portal with a bluish hue made by Balthazar which fluctuates between different places of the Mists, though only five asura gates leading to the Mists can be found. During Scarlet Briar's occupation of Lion's Arch, the Mists gates temporarily resided in Vigil Keep, but were moved back to Lion's Arch when reconstruction efforts began.
- Explorable zones
- World versus World
- Edge of the Mists
- Eternal Battlegrounds
- Blue Borderlands
- Green Borderlands
- Red Borderlands
- Obsidian Sanctum
- Team Deathmatch
- Asura Arena (This area appears to be inaccessible to players, and its function is currently unknown.)
- Raid on the Capricorn, a Conquest map that had been in the game since launch, was removed as a consequence of the removal of underwater combat in Structured PvP in the April 2014 Feature Pack.
- The writing on Lord Odran's map of the mists is in Ascalonian and translates to "beware the danger of secrets kept".