The Tower at Charm was the name of the fortress created by The Lady after her liberation from the Barrowland. It served both as a palace and the administrative center of her Empire. It was in the shape of a cube, and was constructed of massive, imported basalt billets. The basalt that was not used in the construction of the Tower was strewn outward for a mile in every direction except for a single, perfectly manicured approach, restricting all land access to a tightly-controlled point. The land outside the jagged basalt "moat" was actually beautiful pasture.

The Tower was the location of the infamous Battle of Charm, during which the Rebels were crushed in a gruesome battle, and the remainder of the Circle of Eighteen were killed or defeated.