La Paz Department is situated on the Altiplano at the western border of Bolivia, sharing Lake Titicaca with Peru. It contains the mighty mountain range of Cordillera Real with many popular treks and peaks for climbing. Northeast of the Cordillera Real are the Yungas, the steep eastern slopes of the Andes that make the transition to the Amazon basin. It also contains the city of La Paz, the administrative capital of the country.

Tierra del Fuego is a 73,000 km² large archipelago off the south of South America, divided between Argentina and Chile by the 1881 Treaty. This article covers the argentinean (eastern) portion (aka the Province of Tierra del Fuego). The western and southern part (including Cape Horn) belongs to Chile and is covered in the article Tierra del Fuego (Chile).

Chubut is a province in southern Argentina, situated between Río Negro Province, the bordering Santa Cruz Province, the Andes range to the west, and the Atlantic ocean to the east. The province's name derives from the Tehuelche word chupat, meaning "transparent," their description of the Chubut River.

Neuquén is a province of Argentina, located in the west of the country, at the northern end of Patagonia. It borders Mendoza Province to the north, Rio Negro Province to the southeast, and Chile to the west. It also meets La Pampa Province at its northeast corner.