Cape Horn (55°59′S, 67°16′W) on Isla Hornos, Chile, is the continental terminus. The Drake Passage opens 800 km south—next stop, Antarctica. No land, no shelter, just the Antarctic Circumpolar Current screaming through the world's narrowest oceanic choke point.
Winds: 100+ km/h routine. Waves: 15–30 m. Sailors call it "the Mount Everest of oceans." The Panama Canal (1914) ended commercial rounding, but the Cape Horners' route remains a rite of passage for blue-water yachts.
Chile maintains a naval station and a lighthouse—the "lighthouse at the end of the world." An albatross monument honors lost mariners. It's not a place you visit; it's a place you survive.