The main continent where all Elder Scrolls Games take place. It has a large variety of Imperial Provinces: Cyrodil, Morrowind, Skyrim, High Rock, Hammerfell, Summerset Isles (Alinor), Valenwood, Elsweyr, and Black Marsh (Argonia). Tamriel has a huge history and has been the home of many wars.
Not much is known about Yokuda since it was nearly obliterated in an unknown cataclysmic event, but it seems to have a dull, rocky, hilly, desert landscape. It is known to be the original home to the Redguards before they rendered it uninhabitable.
Atmora is a barren and freezing wasteland. It is this extreme cold that caused the water of the Sea of Ghosts that borders Tamriel and Atmora to become icy. This frozen land is also where the Nords of Skyrim are originally from, although not many trips back are made.
Next to nothing is known about the geography of Akavir. It is known that the continent is split into four warring kingdoms, each boasting its own race: Tang Mo, Kamal, Ka Po' Tun, and Tsaesci. Akavir is known to have been a home to dragons. The Blades, originally from Akavir where they were known as the Dragonguard, but turned to serve Reman Cyrodiil in their search for a Dragonborn.
Pyandonea is the island-continent located to the far south-west of Tamriel and home to the elusive Maormer. The island consists of dense rain forests which provide shelter for the southern water spirits. Due to its populace being Merrish, there is speculation that Pyandonea may in fact be part of Tamriel.
Thras, also known as the Coral Kingdom has been a powerful, antagonizing power against the Summerset Isles since before recorded time. The Sload may at one time have even called Summerset part of Thras.
Little is known about Aldmeris (including if it still exists). The Altmer claim that this continent was the birthplace of both elves and mankind.