Travelers are voting West Martello Tower as the best fort in Key West. There is 1 fort in Key West a city just 36 km from Key West. The most popular of these is West Martello Tower in Key West. You can find 1 fort in Florida and 61 forts in the country of United States. Our members favorite in Florida is West Martello Tower and Fort Vancouver National Historic Site is the top pick in United States. Want more? Check out our map of forts in Key West.