The Temple of the Unseen is a White Mantle temple east of Riverside Province. It is only accessible through the mission there and the quest Riverside Assassination. During the mission, players are to sneak into the temple to meet with Dinas and steal the Scepter of Orr from the Mantle. During the quest the players have to assassinate the Mursaat Willem the Demeaning.
The temple is heavily guarded and the paths leading to and from the temple are monitored by Watchtower Guards sitting atop several watchtowers as well as many patrols.