The major guilds in The Elder Scrolls IV: Oblivion are located in various cities across Cyrodiil as follows: Fighters Guild
- Present in almost every major city except the Imperial City.
- Key branches are in Anvil, Chorrol, Cheydinhal, Bravil, Bruma, Leyawiin, and Skingrad.
- Guild halls are usually found near the center or notable parts of these cities, often close to the Mages Guild halls
Mages Guild
- Has branches in Anvil, Bravil, Bruma, Cheydinhal, Chorrol, Leyawiin, Skingrad, and the Arcane University in the Imperial City (the latter unlocks after completing recommendation quests).
- Mages Guild halls are typically located in central or prominent districts of these cities, often near Fighters Guild halls
Thieves Guild
- Located primarily in the Imperial City’s Waterfront District, behind the Abandoned Shack.
- The guild is secretive and requires completing a joining quest given by Armand Christophe in the Imperial City or S'krivva in Bravil
Dark Brotherhood
- The sanctuary is located in the eastern part of Cheydinhal, beneath the Abandoned House and near the Great Chapel of Arkay.
- Joining involves a special assassination quest and sleeping on a bed or bedroll after the deed
Arena
- Located in the Imperial City, it functions as a combat guild where players can compete in deathmatch-style battles
In summary, the Fighters and Mages Guilds have multiple branches spread across Cyrodiil’s major cities, the Thieves Guild is based in the Imperial City Waterfront, and the Dark Brotherhood sanctuary is hidden in Cheydinhal
