American Shoal Lighthouse is is one of the most remote lighthouses in Florida. It isn't the distance from civilization that makes it remote, its more that fact that almost all other Florida Lighthouses lie between two common destinations. Unless you are on your way to Europe or Mexico, you must want to go to American Shoal to see the lighthouse. I haven't been inside of this lighthouse, but I did take my boat to see its exterior. Again, this lighthouse is well off the beaten path, so please be sure to check the weather before you go and be sure you have a seaworthy boat.
Links are to jpeg photographs.
These pictures were taken back in 1990. American Shoal Lighthouse lies on the edge of the reefs south east of Key West. The lighthouse can be seen from Sugarloaf Beach at a distance, but binoculars are necessary if you want to see more than a smudge of the horizon. From this closer view , you can see that American Shoal light is a twin of Fowey Rocks lighthouse except that at Fowey Rocks, the dwelling is painted white. No that isn't a sunken ship's mast to the right of the lighthouse.