Fortified Wall is a University technology.
- Building: University
- Age: Castle Age
- Cost: 200 food, 100 wood
- Research time: 50 seconds
- Available to: 43 of 56 civilizations (13 do not have it).
Upgrades Stone Walls to Fortified Walls. Useful in long, closed games where walls must hold against siege.
Figures from the game data for Update 185872 (September 2026), at the time of publishing.