Trollfort

Trollfort was a fortification in what later became known as the Field Ward of Waterdeep.

Location
The structure stood on Trollyard courtyard, directly across from the Trolltower.

Structure
This structure stood four stories tall and was directly connected to the city walls that surrounded the Field Ward.

Background
It's possible that the origins of the name "Trollfort" derived from the same place as the Trollwall, which was noted as having originally been constructed primarily for the purpose of holding off attacks from trolls north of Waterdeep.