Unique building (Civ5)

In Civilization V and its expansions, a unique building (UB) is a special building that can be built by only one of the civilizations in the game. A unique building always replaces a standard building, and civilizations that don't have one will have a unique improvement or a second unique unit instead.
Civilization	Unique building	Replaces	Difference
 	 	 	
* 1 extra copy of Resources from each improved Luxury near the city
* +2 from each worked and Oasis
 	 	 	
* 1 Great Work of Writing slot, which provides extra XP for units trained in the city if filled
 	 	 	
* +5% (to all production, not just buildings) instead of the 10% to buildings only
* +25% Great Person generation
* Can be built in cities on hill tiles
 	 	 	
* +15% in addition to usual bonus
* +2 from each worked Lakes tile
* -1  maintenance cost
* Can be built in cities adjacent to lake tiles
 	 	 	
* +1 
* +50 HP
 	 	 	
* +3
 	 	 	
* No maintenance cost
* +2
 	 	 	
Vanilla:
* +2 
* +2 
 and :
* +2 
* No maintenance cost
* Doubles given to enemy if city is captured
 	 	 	
* +2
 	 	 	
* +5% to all cities from each Trade Route to City-States
 	 	 	
* +2 
* Provides ( in ) after researching
 	 	 	
* +2 
* +2 for each World Religion that has at least 1 follower in the city
* Can be built in cities not adjacent to River or Lakes
 	 	 	
* +1 from each worked Forest tile, instead of a +10% bonus
 	 	 	
* +1 
* +2
 	 	 	
* +2
 	 	 	
* +15 XP for Mounted Units
* +1 from each worked Pasture in addition to usual bonus
 	 	 	
* Reduces and cost of acquiring new tiles by 25%
 	 	 	
* +3
 	 	 	
* +2 
* No maintenance cost
 	 	 	
* Grants unique promotions to pre-gunpowder melee units