The Spire of the Unseen Guests is located at Sinfall. Once the Ember Court weekly event is unlocked during the Venthyr Covenant campaign, the stoneborn Temel will be found here for the player to access the event. Lady Rovinette is also found here.on the above-ground level of
- is found within a Lost Journal on the second floor after completing the level-up campaign and choosing a covenant.
- During development it was known as the Spire of the Unseen Servants, and then Tower of the Unseen Guests before changing to its current name.
- "The unseen guests", or thal'kituun in their language, is another name for the dreadlords; the book also implies a relation. It was eventually confirmed that Denathrius created the dreadlords, thus the tower is named after them.