Enderal:Ark, Northern Watchtower
Immediately North of Ark, just outside of the Northern Gate
Ark, Northern Watchtower is a military building, though it's not used by the City Guards. There are no hostile NPCs at this location. The tower's entrance doesn't have a door, so the game treats it as outdoors. There are 2 floors in the tower, and there is an unowned bed on the top floor.