Yes.
You're thinking of the Antarctic Treaty.
No country has claim to Antarctica
When one works and lives in Antarctica on a temporary basis, one is allowed to claim temporary residence in Antarctica.
Antarctica is a continent without a country. Whilst many countries claim territory in Antarctica, there are none with a permanent population there.
France, Australia, Norway, Britain, Argentina and Chile claim territory on Antarctica.
Australia does not own any part of Antarctica. No other country owns any part of Antarctica. However, Australia does have a claim on 42% of the Antarctic, which was transferred to Australia in 1935.
Specifically, the Antarctic Treaty does not recognize multiple claims of sovereignty claimed by many countries in the world over 'slices' of the Antarctic continent.Article IV of the treaty reads:"1. Nothing contained in the present treaty shall be interpreted as: (a) a renunciation by any Contracting Party of previously asserted rights of or claims to territorial sovereignty in Antarctica; (b) a renunciation or diminution by any Contracting Party of any basis of claim to territorial sovereignty in Antarctica which it may have whether as a result of its activities or those of its nationals in Antarctica, or otherwise;(c) prejudicing the position of any Contracting Party as regards its recognition or non-recognition of any other States right of or claim or basis of claim to territorial sovereignty in Antarctica."2. No acts or activities taking place while the present treaty is in force shall constitute a basis for asserting, supporting or denying a claim to territorial sovereignty in Antarctica or create any rights of sovereignty in Antarctica. No new claim, or enlargement of an existing claim, to territorial sovereignty in Antarctica shall be asserted while the present treaty is in force."
Technically no-one owns any land in Antarctica. Various countries have staked claims in Antarctica but these have not been universally recognised and after the 1959 Antarctica treaty, which essentially prevented any future claims, Antarctica's status has been pretty much unchanged - lots of people claim to own chunks of it but everybody else says they don't. You could say the Australians because they claim the largest chunk of it...
no
There are no countries in Antarctica. Antarctica does not have any real countries, some countries on other continents have territory that they have laid claim to there, but there are no real countries on Antarctica, it is just a continent that is basically uninhabited other than research stations, and penguins.There are no countries in Antarctica
Australia may have a territorial claim on the Antarctic continent, but it does not control any part of it.