Town Hall
Cost: 2500 gold
Provides owner's kingdom with 1,000 gold per day
City Hall
Cost: 5000 gold
Provides owner's kingdom with 2,000 gold per day
Capitol
Cost: 10,000 gold
Provides owner's kingdom with 4,000 gold per day; only one may exist at any one time in a kingdom; if a player with a Capitol takes over an enemy town that has a Capitol built, the enemy Capitol is destroyed
Fort
Cost:20 ore, 20 wood, 5000 gold
Promotes dwelling construction; provides owner's town with defensive walls that protect it during a seige
Citadel
Cost: 5 ore, 2500 gold
Increases base creature growth by 50%, adds one turret to the Fort, strengthens the town's walls, and adds the town ditch
Castle
Cost: 10 wood, 10 ore, 5000 gold
Doubles base creature growth; adds two additional turrets to the Fort, and further strengthens the town's walls
Tavern
Cost: 5 wood, 500 gold
Allows recruiting of heroes; increases the morale of troops defending the city; grants allied heroes basic knowledge of enemy troops in garrisons and towns
Marketplace
Cost: 5 wood, 500 gold
Allows owner to trade resources; the rates get better as the number of Marketplaces increases in the owner's kingdom
Resource Silo
Cost: 5 ore, 5000 gold
Provides owner's kingdom with +1 mercury every day
Castle Gate
Cost: 5 wood, 5 ore, 10,000 gold
Allows travel between Inferno towns with Castle Gates; the destination town must be unoccupied
Order of Fire
Cost: 5 wood, 1000 gold
Increases all visiting heroes' Spellpower skill by +1; once per hero
Birthing Pools
Cost: 1000 gold
Increases Imp/Familiar base growth by +8 per week
Cages
Cost: 1000 gold
Increases Hell Hound/Cerberus base growth by +3 per week
Brimstone Stormclouds
Cost: 5 sulfer, 1000 gold
Adds +2 to a defending hero's Spellpower skill when defending against a seige
Mage Guild Level 1
Cost: 5 wood, 5 ore, 2000 gold
Allows visiting heroes to learn level 1 spells if they have a spell book; spell books can be bought for 500 gold
Mage Guild Level 2
Cost: 5 wood, 5 ore, 4 sulfer, 4 gems, 4 crystal, 4 mercury, 1000 gold
Allows visiting heroes to learn level 2 spells if they have a spell book; spell books can be bought for 500 gold
Mage Guild level 3
Cost: 5 wood, 5 ore, 6 sulfer, 6 gems, 6 crystal, 6 mercury, 1000 gold
Allows visiting heroes to learn level 3 spells if they have a spell book and Basic Wisdom; spell books can be bought for 500 gold
Mage Guild level 4
Cost: 5 wood, 5 ore, 8 sulfer, 8 gems, 8 crystal, 8 mercury, 1000 gold
Allows visiting heroes to learn level 4 spells if they have a spell book and Advanced Wisdom; spell books can be bought for 500 gold
Mage Guild level 5
Cost: 5 wood, 5 ore, 10 sulfer, 10 gems, 10 crystal, 10 mercury, 1000 gold
Allows visiting heroes to learn level 5 spells if they have a spell book and Expert Wisdom; spell books can be bought for 500 gold
Imp Crucible
Cost: 5 wood, 5 ore, 400 gold
Provides your army with Imps.
Upg. Imp Crucible
Cost: 1000 gold
Provides your army with Familiars, and allows Imps to be upgraded into Familiars.
Hall of Sins
Cost: 5 ore, 1000 gold
Provides your army with Gogs.
Upg. Hall of Sins
Cost: 5 mercury, 1000 gold
Provides your army with Magogs, and allows Gogs to be upgraded into Magogs.
Kennels
Cost: 5 wood, 5 ore, 1500 gold
Provides your army with Hell Hounds.
Upg. Kennels
Cost: 5 sulfer, 1500 gold
Provides your army with Cerberi, and allows Hell Hounds to be upgraded into Cerberi.
Demon Gate
Cost: 5 wood, 5 ore, 2000 gold
Provides your army with Demons.
Upg. Demon Gate
Cost: 5 wood, 5 ore, 2000 gold
Provides your army with Horned Demons, and allows Demons to be upgraded into Horned Demons.
Hell Hole
Cost: 10 ore, 10 sulfer, 2000 gold
Provides your army with Pit Fiends.
Upg. Hell Hole
Cost: 5 mercury, 5 sulfer, 3000 gold
Provides your army with Pit Lords, and allows Pit Fiends to be upgraded into Pit Lords.
Fire Lake
Cost: 10 wood, 10 ore, 6000 gold
Provides your army with Efreeti.
Upg. Fire Lake
Cost: 5 ore, 5 mercury, 5 sulfer, 5 gems, 3000 gold
Provides your army with Efreet Sultans, and allows Efreeti to be upgraded into Efreet Sultans.
Forsaken Palace
Cost: 5 all, 10000 gold
Provides your army with Devils.
Upg. Forsaken Palace
Cost: 5 wood, 5 ore, 20 mercury, 20,000 gold
Provides your army with Archdevils, and allows Devils to be upgraded into Archdevils.