The "southernmost point" was originally marked with a small sign, before the city of Key West erected the now-famous concrete buoy in 1983.

[9] There was separate sign on a nearby fence in that area, with an arrow pointing south (in this case to the left) with the text "90 Miles to Cuba".

[16] (see also Mallory Square, which hosts Key West sunset celebration) By the 2010s, there was a webcam that relays video of the street corner where the buoy is located to the Internet.

[20] In Callahan's Key (2001) by Spider Robinson the monument is mentioned in the line "The famous, oft-photographed marker at The Southernmost Point which is not.

A subplot of Robert Tacoma's second novel, Key Weirder (2005), involves an interstate dispute over where the true southernmost point is located, and, therefore, where the monument should be placed.

[citation needed] In 2023, the location was chosen as the ending point for season 8 of Nebula and YouTube series Jet Lag: The Game, a travel competition show.