Construction

Buildings are the backbone of your dominion and provide you with production and various bonuses.

They can only be constructed on acres of barren land.

More information can be found on the wiki.

Buildings

Land  
Alchemy Plain Produces 45 platinum per hour.
Barracks Hill Houses 36 trained or training military units.

Does not increase in capacity for population bonuses.
Diamond Mine Cavern Produces 15 gems per hour.
Dock Water Produces 1 boat every 20 hours on average.
Each dock prevents 2 of your boats from being sunk (increases by 0.05 each day of the round).
Produces 40 bushels of food per hour.
Factory Hill Reduces construction and land rezoning costs.

Construction costs reduced by 4% per 1% owned, up to a maximum of 60% at 15% owned.
Rezoning costs reduced by 4% per 1% owned, up to a maximum of 60% at 15% owned.
Farm Plain Produces 80 bushels of food per hour.

Each person eats 0.25 of a bushel of food per hour.
Forest Haven Forest Produces 25 lumber per hour.
Fireball damage reduced by 10% per 1% owned, up to a maximum of 80% at 8% owned.
Disband Spies and Assassinate Wizards damage reduced by 10% per 1% owned, up to a maximum of 50% at 5% owned.
Gryphon Nest Mountain Increases offensive power.

Power increased by 1.75% per 1% owned, up to a maximum of 35% at 20% owned.
Guard Tower Hill Increases defensive power.

Power increased by 1.75% per 1% owned, up to a maximum of 35% at 20% owned.
Home Race dependant Houses 30 people.
Lumberyard Forest Produces 50 lumber per hour.
Masonry Plain Increases castle bonuses by 2.75% per 1% owned.
Ore Mine Mountain Produces 60 ore per hour.
School Cavern Produces (1 - (Schools / Total Land)) research points per hour (minimum of 0.5). Limited to 50% of your total land.
Shrine Hill Increases Hero experience gain by 2% per 1% owned, up to a maximum of 20% at 10% owned.
Increases hero bonus by 50% per 1% owned, up to a maximum of 500% at 10% owned.
Smithy Plain Reduces specialist and elite military unit training costs (except Gnome ore costs).

Training cost reduced by 2% per 1% owned, up to a maximum of 36% at 18% owned.
Temple Swamp Increases population growth and reduces defensive bonuses of dominions you invade.

Population growth increased by 6% per 1% owned.
Defensive bonuses reduced by 1.5% per 1% owned, up to a maximum of 25% at 16.67% owned.
Tower Swamp Produces 25 mana per hour.
Guild Swamp Spy, Assassin, Wizard, and Archmage training costs reduced by 3.5% per 1% owned, up to a maximum of 35% at 10% owned.
Spy and Wizard Strength refresh rate increased by 0.1% per 1% owned, up to a maximum of 1% at 10% owned.
Losses on failed black ops reduced by 2.5% per 1% owned, up to a maximum of 25% at 10% owned.