Antarctica
Each year, scientists from 28 different nations conduct experiments not reproducible in any other place in the world. In the summer more than 4,000 scientists operate research stations; this number decreases to just over 1,000 in the winter. McMurdo Station, which is the largest research station in Antarctica, is capable of housing more than 1,000 scientists, visitors, and tourists.
Argentine Antarctica
Esperanza and Marambio are the biggest Argentine bases, holding together 70 buildings, an average of 110 people during the winter, and over a maximum of 250 during the summer. Orcadas Base, located at the South Orkney Islands off the Antarctic mainland (see map, right), was the world's first base in the Antarctic region, operating continuously since 1903. The southernmost Argentine permanent base is Belgrano II, at over 77 degrees south. The southernmost summer base is Sobral, at from "Belgrano II".