In many countries, a mayor is the highest-ranking official in a municipal government such as that of a city or a town. Worldwide, there is a wide variance in local laws and customs regarding the power
Document of 1389 on the election of the mayor of Stockholm
A municipality is usually a single administrative division having corporate status and powers of self-government or jurisdiction as granted by national and regional laws to which it is subordinate.
The Ponce City Hall, in the city of Ponce, Puerto Rico, is the seat of the government for both the city and the surrounding barrios making up the municipality.