A Stone Wall is a basic fortification first available in the 13th Century. Walls keep enemies out, at least until they come knocking with siege weapons. Stone walls can be upgraded to Fortified Walls. Walls have bonus armor against anti-building units.
Available to: All
Cost: 5 Stone
Armor/Pierce Armor: 10/20
Special: +16 bonus armor vs. anti-building attacks.
Upgrades to: Fortified Wall
Upgrade Cost: 200 Food, 100 Wood