Dwarves live in fortresses — underground complexes with all the required buildings for dwarven living.
Fortresses are named in a specific manner, assigned at random during embark. They also gain a title according to the nobles who have arrived. This title is viewable in the upper left of the z screen, in front of the fortress name, and it is also applied to the name of the liaison.
Each fortress title requires a certain population as well as performing a number of "diverse tasks" over the course of one year with the Autumn caravan safely making it home - crafting, metal, wood, gem, stone, and food-related jobs. For example, to become a Town and attract the Mayor, you must perform 4 of the following: 25 crafting jobs, 25 metal-related jobs, 25 wood-related jobs, 10 gem jobs, 25 stone jobs, 25 food jobs.
||3 of 10/10/10/4/10/10
||4 of 25/25/25/10/25/25
||5 of 50/50/50/20/50/50