South America and Antarctica

the capital city and chief port of Argentina, in the eastern central part of the country, on the Plata River; population 3,042,600 (est. 2008).

Ushuaia is the capital of Tierra del Fuego, Antártida e Islas del Atlántico Sur Province, Argentina. It is commonly regarded as the southernmost city in the world. Ushuaia is located in a wide bay on the southern coast of Isla Grande de Tierra del Fuego, bounded on the north by the Martial mountain range, and on the south by the Beagle Channel. It is the only municipality in the Department of Ushuaia, which has an area of 9,390 km2 (3,625 sq mi). It was founded October 12 of 1884 by Augusto Lasserreand is located on the shores of the Beagle Channel surrounded by the mountain range of the Martial Glacier, in the Bay of Ushuaia. Besides being an administrative center, it is a light industrial port and tourist hub.

The southern coast of Chile presents a large number of fjords and fjord-like channels from the latitudes of Cape Horn (55° S) to Reloncaví Estuary (42° S). Some fjords and channels are important navigable channels providing access to ports like Punta Arenas, Puerto Chacabuco and Puerto Natales.

Santiago, is the capital and largest city of Chile as well as one of the largest cities in the Americas. It is the center of Chile's largest and most densely populated conurbation, the Santiago Metropolitan Region, whose total population is 7 million. The city is entirely located in the country's central valley. Most of the city lies between 500 m (1,640 ft) and 650 m (2,133 ft) above mean sea level.

Founded in 1541 by the Spanish conqueror Pedro de Valdivia, Santiago has been the capital city of Chile since colonial times. The city has a downtown core of 19th-century neoclassical architecture and winding side-streets, dotted by art deco, neo-gothic, and other styles. Santiago's cityscape is shaped by several stand-alone hills and the fast-flowing Mapocho River, lined by parks such as Parque Forestal. The Andes Mountains can be seen from most points in the city. These mountains contribute to a considerable smog problem, particularly during winter. The city outskirts are surrounded by vineyards and Santiago is within an hour of both the mountains and the Pacific Ocean.