Isla Grande de Tierra del Fuego
The city proper is located on the northeastern shore of Brunswick Peninsula. Except for the eastern shore, containing the settlements of Guairabo, Rio Amarillo and Punta San Juan, the peninsula is largely uninhabited. The municipality of Punta Arenas includes all of Brunswick Peninsula, as well as all islands west of the "Isla Grande de Tierra del Fuego" and north of Cockburn and Magdalena channels.