Key West can claim to be the southernmost point in the continental U.S., but the big island of Hawaii (Ka Lae) is farther south.
Key West is only 90 miles away from Cuba, while Hawaii is lying about as far south as central Mexico. Hawaii is the only state that is not part of the North American continent.
Ka Lae, Hawaii is also known, fittingly, as South Point. But it might as well be known as Hawaii's Windy City, because this place is blustery. Some of the trees have been blown sideways for so long that they just grow that way now.
Here are some of the extreme points in the United States shared by Mentalfloss.com.