Most buildings are workplaces where your units manufacture goods. A brand new colony begins with a few basic buildings. Hammers and Tools are used to build new ones. Some buildings serve other purposes; see below. The Town hall cannot be upgraded. It produces liberty bells by itself if your population is below 3. The Printing press and Newspaper increase your liberty bell production (in the Town hall); they do not directly employ workers. A Chapel does not permit a Firebrand Preachers to work; you must have a Church or a Cathedral for that. These buildings produce Crosses by themselves.