Thurston's Fort is constructed in the Thurston Questline.
It is tall and occupies 2 x 2 spaces.
In the questline, you build a Ballista and recruit some Stout Knights before building the Fort.
- 20 Wooden Beams
- 30 Iron Ore
- Rally 60 Stout Knights to Garrison Your Walls (within the quest, request your Neighbors' help)