Question

which is the southernmost part of South America

Answer 1

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

Answer 2

hi.....
cape horn is the southernmost part of south america
southernmost city is ushuaia