Here’s one of those things that you don’t notice right off the bat till having seen several of them saying “Hey, aren’t those front doors on people’s fences?”. Yes they are, I’m glad you finally noticed! 🙂
Though I don’t know their official name, there’s literally hundreds around town in many interesting sizes and configurations. To find the best concentration of them head southeast towards Higgs Beach and the Casa Marina Resort. Simply take a side road and admire front doors being utilized as gates here in this ever wacky wonderful island paradise of Key West.