CK3 DatabaseCrusader Kings III · 1.20.0.3 “Crozier” · unofficial
Castle, the game's painting
Built in a castle — the game's painting of one (western style).

Regular building

Walls & Towers

+1.3/month Tax+8 Fort Level+4 Defender Holding Advantage+28% Stationed Heavy Cavalry Damage+4 morecurtain_walls_01

Stone walls and intimidating bastion towers offer excellent protection from both raids and sieges. The more fortifications built, the more impenetrable the castle which they protect becomes.

Built in

Holding types whose building list names it (common/holdings).

Levels

LevelCostTimeLeviesGarrisonMain effects
1. Bastions & Curtain Walls100 gold1095 d—150+0.25/month Tax, +1 Fort Level, …
2. Bailey150 gold1095 d—300+0.4/month Tax, +2 Fort Level, …
3. Wall Towers195 gold1095 d—450+0.55/month Tax, +3 Fort Level, …
4. Second Curtain Wall275 gold1095 d—600+0.7/month Tax, +4 Fort Level, …
5. Zwinger400 gold1095 d—750+0.85/month Tax, +5 Fort Level, …
6. Outer Baileys580 gold1095 d—900+1/month Tax, +6 Fort Level, …
7. Trace Italienne825 gold1095 d—1050+1.15/month Tax, +7 Fort Level, …
8. Ravelins & Cavaliers1,145 gold1095 d—1200+1.3/month Tax, +8 Fort Level, …

Level 1: Bastions & Curtain Walls

Key
curtain_walls_01
Cost
100 gold
Construction
1,095 days (3 yrs)
Garrison
150
Needs
castle, city or temple level 1
Terrain (one of)
Farmlands, Plains, Wetlands, Floodplains

Level 2: Bailey

Key
curtain_walls_02
Cost
150 gold
Construction
1,095 days (3 yrs)
Garrison
300
Needs
castle, city or temple level 1
Innovation
Earthworks
Terrain (one of)
Farmlands, Plains, Wetlands, Floodplains

Level 3: Wall Towers

Key
curtain_walls_03
Cost
195 gold
Construction
1,095 days (3 yrs)
Garrison
450
Needs
castle, city or temple level 1
Terrain (one of)
Farmlands, Plains, Wetlands, Floodplains

Level 4: Second Curtain Wall

Key
curtain_walls_04
Cost
275 gold
Construction
1,095 days (3 yrs)
Garrison
600
Needs
castle, city or temple level 1
Terrain (one of)
Farmlands, Plains, Wetlands, Floodplains

Level 5: Zwinger

Key
curtain_walls_05
Cost
400 gold
Construction
1,095 days (3 yrs)
Garrison
750
Needs
castle, city or temple level 2
Terrain (one of)
Farmlands, Plains, Wetlands, Floodplains

Level 6: Outer Baileys

Key
curtain_walls_06
Cost
580 gold
Construction
1,095 days (3 yrs)
Garrison
900
Needs
castle, city or temple level 2
Terrain (one of)
Farmlands, Plains, Wetlands, Floodplains

Level 7: Trace Italienne

Key
curtain_walls_07
Cost
825 gold
Construction
1,095 days (3 yrs)
Garrison
1050
Needs
castle, city or temple level 3
Terrain (one of)
Farmlands, Plains, Wetlands, Floodplains

Level 8: Ravelins & Cavaliers

Key
curtain_walls_08
Cost
1,145 gold
Construction
1,095 days (3 yrs)
Garrison
1200
Needs
castle, city or temple level 3
Terrain (one of)
Farmlands, Plains, Wetlands, Floodplains

Source: game/common/buildings/00_standard_fortification_buildings.txt, game/common/holdings/00_holdings.txt, game/common/script_values/00_building_values.txt and the English localisation, Crusader Kings III 1.20.0.3.