Introduced in Civ4
Cost[1]50 Hammer
Special Abilities
  • 50% Defense (Except vs. Gunpowder-based Units)
  • -25% Damage to Defenses from Bombardment
    (Except vs. Gunpowder-based Units) (only in C4w)
  • -50% Damage to Defenses from Bombardment
    (Except vs. Gunpowder-based Units) (only in C4bts)
  • Required to Build Castle
  • Double production speed for Protective leaders[2]
  • Double production Speed with Stone

Obsolete with Rifling (Except defensive bonus) (only in C4w and C4bts)

Replaced by Dun [2]



"Before the establishment of centralized governments capable of supporting strong, national armies, individual cities were left to fend for themselves when it came to defense. As a result, many cities constructed city walls to protect against raiders and bandits. City walls represented a major investment in both time and materials, requiring years to complete and constant repairs to maintain their strength and integrity. However, these walls turned the city into a fortress capable of withstanding all but the most determined attack. The development of gunpowder largely put an end to the usefulness of walls in stopping large armies."


"Walls increase a city's defenses against pre-gunpowder units. Build them in cities under threat from enemy or barbarian assault."


In the city screen press the following icon to start Walls construction:

Game versionButton

See also


  1. Cost depends on Game Speed. Quick: 33 Hammer, Epic: 75 Hammer, Marathon: 150 Hammer.
  2. ^ 2,0 2,1 This special ability affects only in C4w and C4bts, and appears only in C4bts.