Awesome, WellTemperedClavier, that sounds really ambitious and serious. Must be a lot of work, my gosh.
Thanks for the link, too. Haven't read it yet, but the pictures do look really authentic.
And welcome to the forums.

Folks have been working on Tamriel Rebuilt for nearly 20 years now. I think preliminary work started as soon as Bethesda announced the game would be limited to the island of Vvardenfell. The project did go through some doldrums in the mid-'10s, but was reinvigorated once it set up a Discord server and brought in some new talent.
Tamriel Rebuilt/Project Tamriel Map
The lighter areas on the map (Morrowind, the Reach, and the Island of Stirk) are the places you can actually visit as a player (though I should caution that southern Morrowind is basically a big flat expanse of nothing right now). There are also plans to do work on Yokuda and the Padomaic Isles.
Thanks for the welcome!