Known as the hardest of the realms to reach, save the ones which are completely inaccessible to mortals. It is described as consisting only of dust, palaces of smoke, and vaporous creatures: "anguish, betrayal, and broken promises like ash filled the bitter air". Levitation and magical breathing are necessary to survive.

Previously known as Snake Mount, this realm is characterized by twisted towers and immense maze gardens. The realm is ruled by laws of labyrinthine policy and betrayals are a matter of course. Boethiah frequently holds the Tournament of Ten Bloods here.

Consisting only of charnel houses and vast slave pens. Any mortal found here is captured and placed in one or the other.

Seemingly endless puzzling rooms and mazes inhabited by vicious creatures such as bears, wolves, werecreatures and Daedra.

It is an endless library where all forbidden knowledge can be found. The books all have black covers with no titles, and the library is haunted by ghosts forever searching for knowledge.

It is a giant garden full of roses and such beauty that it makes mortals half blind.

An endless Void.

Lowest reaches of Oblivion, resembling a fiery and gloomy (much like Mehrunes Dagon's) in which Daedra roam.

Unnamed realm takes the form of tranquil countryside.

A realm of nightmares and torture, every few minutes changing with a lightning flash from one horrifying vision to another.

A place where no light may enter, and is inhabited by daedra known as the Nocturnals. The greatest stronghold here is known as Shade Perilous.

Is intricate and woven together like a web, as that seems to be what he rules over as a Lord.

A realm created by Mankar Camoran with the use of the Mysterium Xarxes, a book of evil power written by Mehrunes Dagon. Gaiar Alata contains pleasant islands with gardens and Ayleid-style buildings. Although it seems to be a paradise, underground there are torturing chambers where followers of the Mythic Dawn Cult go after they die.

A small, lordless realm, created by Mehrunes Dagon.