Unique improvement (Civ5)

Back to List of improvements in Civ5

In Civilization V and its expansions, a unique improvement (UI) is a special tile improvement that can be built by only one of the civilizations in the game. Unlike unique buildings and unique units, a unique improvement never replaces a standard improvement, and civilizations that don't have one will have a unique building or a second unique unit instead. Additionally, any civilization that works a unique improvement's tile can benefit from its effects.

Civilization	Unique improvement	Requires	Effects
Brazilian	Brazilwood Camp	Machinery	+2 Gold +2  Culture after researching Acoustics
Dutch	Polder	Guilds	+3 Food +1 Production and +2 Gold after researching Economics
French	Chateau	Chivalry	+1 Gold +2 Culture +50% Defensive bonus for any unit on the tile Additional +2 Gold and +1 Culture after researching Flight
Incan	Terrace Farm	Construction	+1 Food +1 additional Food for each adjacent Mountain
Moroccan	Kasbah	Chivalry	+1 Food, Production, and Gold 50% Defensive bonus for any unit on the tile
Polynesian	Moai	Construction	+1 Culture +1 Culture for each adjacent Moai +1 Gold after researching Flight
Portuguese	Feitoria	Navigation	1 copy of any Luxury resources owned by the City-State in whose territory the Feitoria is constructed +50% Defensive bonus for any unit on the tile Cannot be pillaged without declaring war on Portugal