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Since Warlords, every civilization in Civilization IV has had their own unique building. A unique building, or UB for short, is a building that can only be built by that civilization. It always replaces some other building, not allowing that one to be built at all.

Civilization Unique building Replaces Difference
American (Civ4)
America
Mall (icon) (Civ4)
Mall
Supermarket (icon) (Civ4)
Supermarket
Arabian (Civ4)
Arabia
Madrassa (icon) (Civ4)
Madrassa
Library (icon) (Civ4)
Library
  • +2 Culture Culture (Civ4)
  • Can turn 2 Citizens into Priests
Aztec (Civ4)
Aztec
Sacrificial Altar (icon) (Civ4)
Sacrificial Altar
Courthouse (icon) (Civ4)
Courthouse
  • -30 Production Hammer (Civ4) cost (on normal speed games)
  • Halves anger Anger (Civ4) duration from sacrificing population
Babylonian (Civ4)
Babylon
Garden (icon) (Civ4)
Garden
Colosseum (icon) (Civ4)
Colosseum
Byzantine (Civ4)
Byzantium
Hippodrome (icon) (Civ4)
Hippodrome
Theatre (icon) (Civ4)
Theatre
  • Cannot turn citizens into artists, unlike in the regular Theatre
  • Happiness Happiness (Civ4) from Horse Horse (Civ4) instead of Dye Dyes (Civ4)
  • +1 Happiness Happiness (Civ4)
  • +1 Happiness Happiness (Civ4) per 5% culture rate Culture (Civ4), instead of per 10%
Carthaginian (Civ4)
Carthage
Cothon (icon) (Civ4)
Cothon
Harbor (icon) (Civ4)
Harbor
  • +20 production Hammer (Civ4) cost (on normal speed games)
  • +1 trade route TradeRoute4
Celtic (Civ4)
Celtia
Dun (icon) (Civ4)
Dun
Walls (icon) (Civ4)
Walls
Chinese (Civ4)
China
Pavilion (icon) (Civ4)
Pavilion
Theatre (icon) (Civ4)
Theatre
  • +25% culture Culture (Civ4) bonus for the city it's built in
Egyptian (Civ4)
Egypt
Obelisk (icon) (Civ4)
Obelisk
Monument (icon) (Civ4)
Monument
  • Can turn 2 Citizens into Priests
English (Civ4)
England
Stock Exchange (icon) (Civ4)
Stock Exchange
Bank (icon) (Civ4)
Bank
Ethiopian (Civ4)
Ethiopia
Stele (icon) (Civ4)
Stele
Monument (icon) (Civ4)
Monument
French (Civ4)
France
Salon (icon) (Civ4)
Salon
Observatory (icon) (Civ4)
Observatory
German (Civ4)
Germany
Assembly Plant (icon) (Civ4)
Assembly Plant
Factory (icon) (Civ4)
Factory
  • Can turn 4 Citizens into Engineers, rather than 2
  • Double construction speed with Coal Coal
Greek (Civ4)
Greece
Odeon (icon) (Civ4)
Odeon
Colosseum (icon) (Civ4)
Colosseum
Holy Roman Empire (Civ4)
Holy Rome
Rathaus (icon) (Civ4)
Rathaus
Courthouse (icon) (Civ4)
Courthouse
  • -75% Maintenance CommerceRed4 instead of -50%
Incan (Civ4)
Inca
Terrace (icon) (Civ4)
Terrace
Granary (icon) (Civ4)
Granary
Indian (Civ4)
India
Mausoleum (icon) (Civ4)
Mausoleum
Jail (icon) (Civ4)
Jail
  • +2 Happiness Happiness (Civ4)
Japanese (Civ4)
Japan
Shale Plant (icon) (Civ4)
Shale Plant
Coal Plant (icon) (Civ4)
Coal Plant
  • Doesn't require Coal Coal to provide Power Power (Civ4)
  • Provides +10% production Hammer (Civ4)
Khmer (Civ4)
Khmer
Baray (icon) (Civ4)
Baray
Aqueduct (icon) (Civ4)
Aqueduct
Korean (Civ4)
Korea
Seowon (icon) (Civ4)
Seowon
University (icon) (Civ4)
University
  • +35% Science Beaker (Civ4) rather than +25%
Malinese (Civ4)
Mali
Mint (icon) (Civ4)
Mint
Forge (icon) (Civ4)
Forge
Mayan (Civ4)
Maya
Ball Court (icon) (Civ4)
Ball Court
Colosseum (icon) (Civ4)
Colosseum
  • +2 Happiness Happiness (Civ4)
Mongolian (Civ4)
Mongolia
Ger (icon) (Civ4)
Ger
Stable (icon) (Civ4)
Stable
  • +2 experience to new Mounted units
Native American (Civ4)
Native America
Totem Pole (icon) (Civ4)
Totem Pole
Monument (icon) (Civ4)
Monument
  • +3 experience to new Archery units
Dutch (Civ4)
Netherlands
Dike (icon) (Civ4)
Dike
Levee (icon) (Civ4)
Levee
  • Can be built by coastal Coast (Civ4) cities as well as cities on rivers River (Civ4)
  • +1 Production Hammer (Civ4) to water tiles
Ottoman (Civ4)
Ottomans
Hammam (icon) (Civ4)
Hammam
Aqueduct (icon) (Civ4)
Aqueduct
  • +2 Happiness Happiness (Civ4)
Persian (Civ4)
Persia
Apothecary (icon) (Civ4)
Apothecary
Grocer (icon) (Civ4)
Grocer
  • +2 Health Health (Civ4)
Portuguese (Civ4)
Portugal
Feitoria (icon) (Civ4)
Feitoria
Customs House (icon) (Civ4)
Customs House
  • +1 Commerce Coin (Civ4) on water tiles Ocean (Civ4)Coast (Civ4)
Roman (Civ4)
Rome
Forum (icon) (Civ4)
Forum
Market (icon) (Civ4)
Market
  • +25% Great Person points GreatPerson4
Russian (Civ4)
Russia
Research Institute (icon) (Civ4)
Research Institute
Laboratory (icon) (Civ4)
Laboratory
  • +2 Free Scientist specialists
Spanish (Civ4)
Spain
Citadel (icon) (Civ4)
Citadel
Castle (icon) (Civ4)
Castle
  • +5 experience points to Siege Units
Sumerian (Civ4)
Sumeria
Ziggurat (icon) (Civ4)
Ziggurat
Courthouse (icon) (Civ4)
Courthouse
Viking (Civ4)
Vikings
Trading Post (icon) (Civ4)
Trading Post
Lighthouse (icon) (Civ4)
Lighthouse
Zulu (Civ4)
Zululand
Ikhanda (icon) (Civ4)
Ikhanda
Barracks (icon) (Civ4)
Barracks
  • +10 Production Hammer (Civ4) cost (on normal speed games)
  • -20% Maintenance CommerceRed4
Civilization IV [edit]
WarlordsBeyond the SwordColonization

Buildings (Unique) • CivicsCivilizationsErasLeaders (Traits) • ReligionsResourcesSoundtrackTechnologiesTerrains (Tile Improvement) • Units (UniqueClassPromotions) • Wonders

Hammer (Civ4) ProductionBeaker (Civ4) ScienceCulture (Civ4) CultureBread (Civ4)FoodEspionage (Civ4) EspionagePower (Civ4) PowerHealth (Civ4) Health

† Total conversion remake of the game Sid Meier's Colonization using Civilization IV engine
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