The Guard Tower upgrade is a tower technology researched at the University. Upgrades Watch Towers to Guard Towers, which are stronger.
Plan Guard Tower in the Upgrade Codex →
Effect
Upgrades Watch Towers to Guard Towers, which are stronger.
Cost
100 food
250 wood⏱ 30s
Where to research
Researched at the University.
Required for
Guard Tower is a prerequisite for this upgrade:
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