[
	// Ancient Era
	{
		name:"Palace",
		isWonder:true,
		production:3,
		science:3,
		gold:3,
		culture:1,
		cost:1,
		uniques:["Indicates the capital city"]
	},
	{
		name:"Monument",
		culture:2,
		cost:40,
		hurryCostModifier:40,
		maintenance:1
	},
	{
		name:"Granary", 
		food:2,
		resourceBonusStats:{food:1},
		maintenance:1,
		hurryCostModifier:25,
		requiredTech:"Pottery"
	},
	{
		name:"Stone Works", 
		happiness:1,
		production:1
		requiredNearbyImprovedResources:["Marble","Stone"]
		resourceBonusStats:{production:1},
		maintenance:1,
		hurryCostModifier:25,
		requiredTech:"Calendar"
	},
	{
		name:"Stonehenge",
		culture:6,
		isWonder:true,
		greatPersonPoints:{production:1},
		requiredTech:"Calendar"
	},
	{
		name:"The Great Library",
		science:3,
		culture:1,
		greatPersonPoints:{science:1},
		isWonder:true,
		providesFreeBuilding: "Library",
		freeTechs:1,
		requiredTech:"Writing"
	},
	{
		name:"Library",
		hurryCostModifier:25,
		maintenance:1,
		uniques:["+1 Science Per 2 Population"],
		requiredTech:"Writing"
	},
	{
		name:"Paper Maker",
		replaces:"Library",
		uniqueTo:"China",
		hurryCostModifier:25,
		gold:2,
		uniques:["+1 Science Per 2 Population"],
		requiredTech:"Writing"
	},
	{
		name:"Circus", 
		requiredNearbyImprovedResources:["Ivory","Horses"]
		happiness:2,
		hurryCostModifier:25,
		requiredTech:"Trapping"
	},
	{
		name:"Walls",
		cityStrength:5,
		cityHealth:50,
		hurryCostModifier:25,
		requiredTech:"Masonry"
	},
	{
		name:"The Pyramids",
		culture:1,
		greatPersonPoints:{production:1},
		isWonder:true,
		uniques:["Worker construction increased 25%","Provides 2 free workers"],
		requiredTech:"Mathematics"
	},
	{
		name:"Barracks",
		xpForNewUnits:15,
		hurryCostModifier:25,
		maintenance:1,
		requiredTech:"Bronze Working"
	},
	
	// Classical Era
	
	{
		name:"Lighthouse",
		hurryCostModifier:25,
		maintenance:1,
		resourceBonusStats:{food:1},
		uniques:["Can only be built in coastal cities","+1 food from Ocean and Coast tiles"]
		requiredTech:"Optics"
	},
	{
		name:"The Great Lighthouse",
		culture:1,
		greatPersonPoints:{gold:1},
		isWonder:true,
		providesFreeBuilding: "Lighthouse",
		uniques:["Can only be built in coastal cities", "All military naval units receive +1 movement and +1 sight"]
		requiredTech:"Optics"
	},
	{
		name:"Stable", 
		maintenance:1,
		requiredNearbyImprovedResources:["Horses","Sheep","Cattle"]
		resourceBonusStats:{production:1},
		hurryCostModifier:25,
		requiredTech:"Horseback Riding"
	},
	{
		name:"Circus Maximus",
		happiness:5,
		culture:1,
		isWonder:true,
		requiredBuildingInAllCities:"Colloseum",
		requiredTech:"Horseback Riding"
	},
	{
		name:"Hanging Gardens",
		greatPersonPoints:{culture:1},
		food:10,
		culture:1,
		isWonder:true,
		requiredTech:"Mathematics"
	},
	{
		name:"Colloseum", 
		maintenance:1,
		happiness:2,
		hurryCostModifier:25,
		requiredTech:"Construction"
	},
	{
		name:"Temple",
		culture:3,
		specialistSlots:{culture:1},
		requiredBuilding:"Monument",
		maintenance:2,
		hurryCostModifier:25,
		requiredTech:"Philosophy"
	},
	{
		name:"Burial Tomb",
		replaces:"Temple",
		uniqueTo:"Egypt",
		culture:3,
		happiness:1,
		specialistSlots:{culture:1},
		requiredBuilding:"Monument",
		hurryCostModifier:25,
		requiredTech:"Philosophy"
	},
	{
		name:"The Oracle",
		culture:3,
		greatPersonPoints:{science:1},
		isWonder:true,
		uniques:["Free Social Policy"],
		requiredTech:"Philosophy"
	},
	{
		name:"Market",
		gold:2,
		specialistSlots:{gold:1},
		hurryCostModifier:25,
		percentStatBonus:{gold:25},
		requiredTech:"Currency"
	},
	{
		name:"Bazaar",
		replaces:"Market",
		uniqueTo:"Arabia",
		gold:2,
		specialistSlots:{gold:1},
		hurryCostModifier:25,
		percentStatBonus:{gold:25},
		uniques:["Provides 1 extra copy of each improved luxury resource near this City",
			"+2 Gold for each source of Oil and oasis"],
		requiredTech:"Currency"
	},
	{
		name:"Mint",
		maintenance:0,
		requiredNearbyImprovedResources:["Gold","Silver"],
		resourceBonusStats:{gold:2},
		hurryCostModifier:25,
		requiredTech:"Currency"
	},
	{
		name:"Aqueduct",
		maintenance:1,
		hurryCostModifier:25,
		uniques:["40% of food is carried over after a new citizen is born"]
		requiredTech:"Engineering"
	},
	
	// Medieval Era
	
	{
		name:"Monastery",
		maintenance:0,
		requiredNearbyImprovedResources:["Wine","Incense"],
		resourceBonusStats:{culture:2},
		hurryCostModifier:25,
		requiredTech:"Theology"
	},
	{
		name:"Hagia Sophia",
		culture:1,
		greatPersonPoints:{culture:1},
		isWonder:true,
		uniques:["+33% great person generation in all cities"],
		requiredTech:"Theology"
	},
	{
		name:"National College",
		science:3,
		culture:1,
		isWonder:true,
		percentStatBonus:{science:50},
		requiredBuildingInAllCities:"Library",
		requiredTech:"Civil Service"
	},
	{
		name:"Chichen Itza",
		culture:1,
		greatPersonPoints:{production:1},
		isWonder:true,
		uniques:["Golden Age length increases +50%"],
		requiredTech:"Civil Service"
	},
	{
		name:"Machu Pichu",
		gold:5,
		greatPersonPoints:{gold:1},
		culture:1,
		isWonder:true,
		uniques:["Gold from all trade routes +25%"],
		requiredTech:"Guilds"
	},
	{
		name:"Workshop", 
		maintenance:2,
		production:2,
		specialistSlots:{production:1},
		hurryCostModifier:25,
		percentStatBonus:{production:15},
		requiredTech:"Metal Casting"
	},
	{
		name:"Forge",
		maintenance:1,
		hurryCostModifier:25,
		requiredNearbyImprovedResources:["Iron"],
		resourceBonusStats:{production:1},
		requiredTech:"Metal Casting"
	},
	{
		name:"Harbor",
		maintenance:2,
		hurryCostModifier:25,
		uniques:["+1 production from all sea resources worked by the city",
			"Connects trade routes over water","Can only be built in coastal cities"]
		requiredTech:"Compass"
	},
	{
		name:"University",
		maintenance:2,
		hurryCostModifier:15,
		percentStatBonus:{science:33},
		specialistSlots:{science:2},
		requiredBuilding:"Library",
		uniques:["Jungles provide +2 science"],
		requiredTech:"Education"
	},
	{
		name:"Oxford University",
		science:3,
		culture:1,
		freeTechs:1,
		isWonder:true,
		percentStatBonus:{science:50},
		requiredBuildingInAllCities:"University",
		requiredTech:"Education"
	},
	{
		name:"Castle",
		cityStrength:7,
		cityHealth:25,
		hurryCostModifier:25,
		requiredBuilding:"Walls",
		requiredTech:"Chivalry"
	},
	{
		name:"Angkor Wat",
		culture:1,
		greatPersonPoints:{production:1},
		isWonder:true,
		uniques:["Cost of acquiring new tiles reduced by 25%"],
		requiredTech:"Chivalry"
	},
	{
		name:"Ironworks",
		production:8,
		culture:1,
		isWonder:true,
		requiredBuildingInAllCities:"Workshop",
		requiredTech:"Machinery"
	},
	{
		name:"Notre Dame",
		culture:1,
		happiness:10,
		greatPersonPoints:{gold:1},
		isWonder:true,
		requiredTech:"Physics"
	},
	{
		name:"Armory",
		xpForNewUnits:15,
		hurryCostModifier:25,
		maintenance:1,
		requiredBuilding:"Barracks",
		requiredTech:"Steel"
	},
	
	// Renaissance Era
	
	{
		name:"Observatory",
		maintenance:2,
		hurryCostModifier:25,
		percentStatBonus:{science:50},
		requiredBuilding:"Library",
		uniques:[] //todo: "City must be bordering a mountain", 
		requiredTech:"Astronomy"
	},
	{
		name:"Opera House",
		culture:4,
		specialistSlots:{culture:1},
		hurryCostModifier:10,
		requiredBuilding:"Temple",
		maintenance:2,
		requiredTech:"Acoustics"
	},
	{
		name:"Sistine Chapel",
		culture:1,
		isWonder:true,
		uniques:["Culture in all cities increased by 25%"],
		requiredTech:"Acoustics"
	},
	{
		name:"Bank",
		gold:2,
		specialistSlots:{gold:1},
		hurryCostModifier:15,
		percentStatBonus:{gold:25},
		requiredBuilding:"Market",
		requiredTech:"Banking"
	},
	{
		name:"Forbidden Palace",
		culture:1,
		isWonder:true,
		uniques:["Unhappiness from population decreased by 10%"],
		requiredTech:"Banking"
	},
	{
		name:"Theatre",
		happiness:3,
		hurryCostModifier:10,
		maintenance:2,
		requiredBuilding:"Colloseum",
		requiredTech:"Printing Press"
	},
	{
		name:"Museum",
		culture:5,
		specialistSlots:{culture:1},
		requiredBuilding:"Opera House",
		maintenance:3,
		hurryCostModifier:0,
		requiredTech:"Archaeology"
	},
	{
		name:"Hermitage",
		percentStatBonus:{culture:50},
		culture:5,
		isWonder:true,
		requiredBuildingInAllCities:"Opera House",
		requiredTech:"Archaeology"
	}, 
	{
		name:"The Louvre",
		culture:1,
		happiness:4,
		isWonder:true,
		uniques:["Free Great Artist Appears"],
		requiredTech:"Archaeology"
	},
	{
		name:"Seaport",
		hurryCostModifier:25,
		maintenance:2,
		uniques:["+1 production and gold from all sea resources worked by the city",
			"Can only be built in coastal cities", "+15% production of naval units"]
		requiredTech:"Navigation"
	},
	{
		name:"Taj Mahal",
		culture:1,
		happiness:4,
		isWonder:true,
		uniques:["Empire enters golden age"],
		requiredTech:"Architecture"
	},
	{
		name:"Porcelain Tower",
		culture:1,
		greatPersonPoints:{science:2},
		isWonder:true,
		uniques:["Free great scientist appears","Production to science conversion in cities increased by 33%"],
		requiredTech:"Architecture"
	}, 
	{
		name:"Windmill",
		production:2,
		specialistSlots:{production:1},
		hurryCostModifier:25,
		maintenance:2,
		percentStatBonus:{production:10},
		requiredTech:"Economics"
	},
	
	// Industrial Era
	
	{
		name:"Public School",
		science:3,
		specialistSlots:{science:1},
		requiredBuilding:"University",
		maintenance:3,
		hurryCostModifier:0,
		uniques:["+1 Science Per 2 Population"],
		requiredTech:"Scientific Theory"
	},
	{
		name:"Factory",
		production:4,
		percentStatBonus:{production:10},
		specialistSlots:{production:1},
		requiredBuilding:"Workshop",
		maintenance:3,
		hurryCostModifier:0,
		requiredResource:"Coal",
		requiredTech:"Industrialization"
	},
	{
		name:"Military Academy",
		xpForNewUnits:15,
		hurryCostModifier:25,
		maintenance:1,
		requiredBuilding:"Armory",
		requiredTech:"Military Science"
	},
	{
		name:"Hospital",
		food:5,
		requiredBuilding:"Aqueduct",
		maintenance:2,
		hurryCostModifier:0,
		requiredTech:"Biology"
	},
	{
		name:"Stock Exchange",
		gold:3,
		percentStatBonus:{gold:25},
		specialistSlots:{gold:2},
		hurryCostModifier:15,
		requiredBuilding:"Bank",
		requiredTech:"Electricity"
	},
	
	// Modern Era
	
	{
		name:"Broadcast Tower",
		culture:3,
		percentStatBonus:{culture:33},
		requiredBuilding:"Museum",
		maintenance:3,
		requiredTech:"Radio"
	},
	{
		name:"Eiffel Tower",
		culture:1,
		happiness:5
		isWonder:true,
		uniques:["Provides 1 happiness per social policy"],
		requiredTech:"Radio"
	},
	{
		name:"Research Lab",
		science:4,		
		percentStatBonus:{science:50},
		specialistSlots:{science:1},
		requiredBuilding:"Public School",
		maintenance:3,
		requiredTech:"Plastics"
	},
	{
		name:"Stadium",
		happiness:4,
		requiredBuilding:"Theatre",
		maintenance:2,
		requiredTech:"Mass Media"
	},
	{
		name:"Cristo Redentor",
		culture:5,
		isWonder:true,
		uniques:["Culture cost of adopting new Policies reduced by 10%"],
		requiredTech:"Flight"
	},
	
	// Information Era
	
	{
		name:"Medical Lab",
		requiredBuilding:"Hospital",
		maintenance:3,
		requiredTech:"Pharmaceuticals",
		uniques:["25% of food is carried over after a new citizen is born"]
	},
	{
		name:"Nuclear Plant",
		production:5,		
		percentStatBonus:{production:15},
		requiredBuilding:"Factory",
		maintenance:3,
		cannotBeBuiltWith:"Solar Plant",
		requiredResource:"Uranium",
		requiredTech:"Nuclear Fission"
	},
	{
		name:"Solar Plant",
		production:5,		
		percentStatBonus:{production:15},
		requiredBuilding:"Factory",
		maintenance:3,
		cannotBeBuiltWith:"Nuclear Plant",
		requiredTech:"Ecology",
		uniques:["Must be next to desert"]
	},
	{
		name:"Sydney Opera House",
		isWonder:true,
		percentStatBonus:{culture:50},
		uniques:["Free Social Policy","Can only be built in coastal cities"],
		requiredTech:"Ecology"
	},
	{
		name:"Spaceship Factory",
		production:3,
		requiredResource:"Aluminum",
		cost:360,
		uniques:["Increases production of spaceship parts by 50%"]
		requiredTech:"Robotics"
	},
	{
		name:"SS Booster",
		requiredResource:"Aluminum",
		requiredTech:"Robotics",
		uniques:["Spaceship part"]
	},
	{
		name:"Apollo Program",
		cost:1500,
		isWonder:true,
		uniques:["Enables construction of Spaceship parts"],
		requiredTech:"Rocketry"
	},
	
	// Future Era
	
	{
		name:"SS Cockpit",
		requiredResource:"Aluminum",
		requiredTech:"Satellites",
		uniques:["Spaceship part"]
	},
	{
		name:"SS Engine",
		requiredResource:"Aluminum",
		requiredTech:"Particle Physics",
		uniques:["Spaceship part"]
	},
	{
		name:"SS Stasis Chamber",
		requiredResource:"Aluminum",
		requiredTech:"Nanotechnology",
		uniques:["Spaceship part"]
	}
]