These cast iron horse heads abound in New Orleans. They're the posts to which one should, if so inclined and equipped, tether one's horse. They've been there, in the French Quarter, since the 1800s.
They're shaped like horses, which is convenient. New Orleans has drinking. It possibly always has. Match your horse to the iron horse. And then, tie one on. Too much to drink? Forget where you left your horse? (It happens to the best of us.) Well, look for a horse on the sidewalk. Maybe your horse is there.
Nineteenth century shorthand. Mnemonic devices for the tragically drunk.
This photo dates to 2006. The horse? Older than that. Long live NOLA.