Argentine Antarctica mainland. Argentina was the only nation to have an Antarctic base for 40 years until the British built a base on the same islands. Argentina bases its claims on this sector of Antarctica on the following grounds: Argentina's claim to the Antarctic Peninsula overlaps with the Antarctic claims of Chile, 53°W to 90°W, and the UK claims, 20°W to 80°W. Currently, there are no attempts by Argentina or any other country to enforce territorial claims in Antarctica. See List of Antarctic territorial claims. None of these claims have international recognition and have been suspended by the Antarctic Treaty in 1961.
Argentine Antarctica Fuego, Antarctica, and South Atlantic Islands. The provincial authorities reside in Ushuaia and the Governor annually designates his or her delegate for the Antarctica region. The "civil power" of any of the administrators extends no further than that nation's own bases. The South Orkney Islands are part of "Islas del Atlántico Sur" (South Atlantic Islands) Department, which include Falkland Islands and South Georgia and South Sandwich Islands (according to Argentine claim). The Argentine exploration of the continent started early in the 20th century. José María Sobral was the first Argentine to set foot on Antarctica in 1902, where he spent