Provinces of Argentina became provinces in 1951. Misiones did so in 1953, and Formosa, Neuquén, Río Negro, Chubut and Santa Cruz, in 1955. The last national territory, Tierra del Fuego, became the Tierra del Fuego, Antártida e Islas del Atlántico Sur Province in 1990. Argentina is a federation of twenty-three provinces and one autonomous city, Buenos Aires. Provinces are divided for administration purposes into departments and municipalities, except for Buenos Aires Province, which is divided into partidos and "localidades". Buenos Aires City itself is divided into communes ("comuna") and non-official neighbourhoods ("barrios"). Provinces hold all the power that they chose not to delegate
Provinces of South Korea administrative divisions with equal status: special autonomous province, special city, metropolitan city, and special autonomous city. A special autonomous province (, ) is a province with more autonomy over its economy and more powers are given to the provincial government. Jeju is the only special autonomous province, while Seoul is the only special city and Sejong is the only special autonomous city. Governors for the provinces and mayors for the special/metropolitan cities are elected every four years. Current governors and mayors are listed at List of governors of South Korea. South Korea claims five provinces on the territory controlled by