The Cheydinhal Sanctuary is one of the Dark Brotherhood sanctuaries spread across Cyrodiil. Once the Hero is recruited by Lucien, he or she will be a murderer in the Cheydinhal Sanctuary. The player can receive the first contracts from Vicente Valtieri, and later from Ocheeva.
Situated in the basement of an abandoned house in eastern Cheydinhal, the Dark Brotherhood members can also gain entrance to the sanctuary through a trap door in the well behind the house. The well leads to the main hall of the Sanctuary. Altogether, the Cheydinhal Sanctuary has five rooms: the main hall, the training quarters, the living quarters, Ocheeva's bedroom, and Vicente's bedroom.
There are eight Dark Brothers and Sisters living in the Sanctuary (Before "The Purification"). Those are
- Lucien Lachance – Speaker
- Vicente Valtieri – Executioner
- Ocheeva – Executioner
- Teinaava – Assassin
- Gogron gro-Bolmog – Eliminator
- Antoinetta Marie – Slayer
- Telaendril – Assassin
- M'raaj-Dar – Assassin
- If the Hero tries to activate the door before they have been told by Lucien Lachance the passcode, they won't be able to open it.
- Despite the fact that there are five Cyrodiilic Sanctuaries, this is the only accessible one.
- After completing the quest, "The Purification", the Arrow of Immolation can be found here.
- The sanctuary was mentioned in Cicero's Journal in The Elder Scrolls V: Skyrim.