Marambio Station, Antarctic research station in Tierra del Fuego, Argentina.

Marambio Station is an Argentine research facility on Marambio (Seymour) Island, built on a plateau about 200 m above sea level. Its 27 buildings, covering over 20,000 m², include laboratories, accommodation, dining halls, a chapel, a medical suite and a passenger air terminal. The bright red complex has a square tower with a glass-enclosed top and a long single-story wing with a pitched roof.

The Argentine Air Force founded the station in October 1969 and built the first runway in Antarctica capable of handling conventional aircraft. This achievement made regular supply operations possible and changed how research could be conducted on the continent.

The station bears the name of Vice-Commodore Gustavo Argentino Marambio, an aviation pioneer who flew over Margarita Bay in December 1951. Its nickname, "Antarctica's Entrance Door", recalls the 1969 Fokker F-27 landing that linked the continent to the world by wheeled aircraft. A Catholic chapel and a museum are among the facilities.

The facility runs year-round, with a smaller winter crew of around 50 and a larger summer team reaching up to 150 researchers. Access is restricted and typically only available through organized expeditions or official authorization.

Powerful winds create wind-chill effects that make perceived temperatures far colder than the actual measurements recorded. These wind conditions make outdoor work exceptionally hazardous and require specialized protective gear.