Defensive Structures are a type of building available in every game of the Age of Empires series. Rather than be used to train units or research technologies, they are used to defend their civilization from attacks, or warn it of attacks.

List of Defensive Structures Edit

Age of Empires Edit

All defensive structures researched and upgraded from Granary:

Towers found in the campaign and the scenario editor:

Age of Empires II Edit

All defensive structures are researched and upgraded at the University.

Age of MythologyEdit

All defensive structure (except for fully upgraded walls) can research technologies that upgrade themselves. Towers can also research technologies that improve building line of sight.

Age of Empires III Edit

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