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Antarctica is a continent; the Antarctic is a region on earth.
You can review the list of research stations here:
http://en.wikipedia.org/wiki/Research_stations_in_Antarctica#Research_stations
You can review the site, below, to learn the names, nationalities and locations of the research stations in Antarctica.
There are no settlements in Antarctica, only research stations.
There are no cities in Antarctica.
You can review this list of stations:
en.wikipedia.org/wiki/Research_stations_in_Antarctica