Windmill is the tier 6 Item in the Farming line of Capital City Objects. A Windmill is formed after 3 Barns are placed next to each other. If more than 3 Barns are placed next to each other, they'll form a Super Windmill, but aside from visual difference it does nothing special. You can get it as loot from Chest and Large Chest or using a Crane on an existing Windmill. If 3 Windmills are placed next to each other, they combine to form a Bakery and if 4 or more Windmills are placed next to each other they'll form a Super Bakery.