Wikipedia
Antártica is a Chilean commune in Antártica Chilena Province, Magallanes y la Antártica Chilena Region, which covers all the Chilean Antarctic Territory, the territory in Antarctica claimed by Chile. It ranges from 53°W to 90°W and from the South Pole to 60°S, overlapping the Argentine and British Antarctic claims, and is the largest and least populated commune in Chile, being over 25 times the size of the next largest commune, Natales. It is administered by the Cabo de Hornos municipality in the South American mainland.
Antártica was created on July 11, 1961, and was dependent on the Magallanes Province until 1975, when the Antártica Chilena Province was created, making it dependent administratively on Puerto Williams, the province capital.