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.
Uruguayan Antarctica Day" ("Día de la Antártida Uruguaya") and promote the study and dissemination of the issue among the younger generations. In the preamble, Lacalle argued that "we have chosen the 28th of August, as the foundation of the Uruguayan Antarctic Institute, inspired by the teachings of Professor Julio C. Musso, has been the area where the Antarctic vocation of our country was born and raised." Uruguayan Antarctica Uruguayan Antarctica () is the name given by Professor Julio César Musso to refer to the area of the Antarctica where it is believed that the Oriental Republic of Uruguay should exercise its sovereignty.