When you decide to start building, the artisans start to work. The construction is complete when the time allocated for each construction project has elapsed. Initially, you have two artisans, so it's possible to work on two buildings.
Buildings have an upper level limit. Castle upper levels change, depending on the lord's level. Workers’ union's upper levels change, depending on the castle level. Upper levels of other buildings -except the castle and the workers’ union- change, depending on the workers’ union.
Changing building placement
When you select a defence building, a circle indicates its attack range.
An icon appears in a building when it has produced over 100 resources; clicking the "Collect Resource" button in the menu allows you to collect them.