Águila Islet in the context of Extreme points of the Americas

Cape Horn (Spanish: Cabo de Hornos, pronounced [ˈkaβo ðe ˈoɾnos]) is the southernmost headland of the Tierra del Fuego archipelago of southern Chile, and is located on the small Hornos Island. Although not the most southerly point of South America (which is Águila Islet), Cape Horn marks the northern boundary of the Drake Passage and marks where the Atlantic and Pacific Oceans meet.

Cape Horn was identified by mariners and first rounded in 1616 by the Dutchmen Willem Schouten and Jacob Le Maire, who named it Kaap Hoorn (pronunciation) after the city of Hoorn in the Netherlands. For decades, Cape Horn was a major milestone on the clipper route, by which sailing ships carried trade around the world. The waters around Cape Horn are particularly hazardous, owing to strong winds, large waves, strong currents and icebergs.

The extreme points of South America are the points that are farther north, south, east or west than any other location on the continent. The continent's southernmost point is often said to be Cape Horn, but Águila Islet of the Diego Ramírez Islands lies further south.