It’s hard to tell whether there are more ‘Hemingway was here’ or ‘Southernmost bakery/hotel/gift shop’ signs in Key West but either way you’ll quickly come to know that Key West is the southernmost point of the USA. And there’s a big buoy to prove it. This will no doubt be on every list of what to do in Key West.
if you want a picture next to the buoy or a picture without anyone else next to the buoy, you either have to get up hellishly early (like I did), or stand in a photo line for 20 minutes (I refused to), or visit back in 2010 when the photo line wasn’t a thing. I do accept that this last option might be a touch difficult.