Once it is cleared of monsters, 120
+ 50 
is awarded, a merchant will setup shop here, and the Nilfgaardian Army will take over the place along with the nearby Ferry Station.
Notes
- Name is in reference to a Nilfgaardian family, the most famous of which would be Emperor Jan Calveit.
- There is a Blood-covered letter on a corpse on the second floor of the main tower but can only be obtained before the area is cleared of monsters, after which it disappears.
- The corpses around the place similarly disappear, but can be looted before that (just minor, non-magic weapons) even though they don't glow.
- Two containers with minor loot - on the eastern side of the tower, behind the stairs - are "refilled" after the site is liberated, even if looted before.