Two Fortresses Were built to Guard Against Invasions that Never Came, Mullet Key is one of them As one leaves the Gulf of Mexico to enter Tampa Bay, Mother Nature provides two keys that stand sentinel at the entrance of Tampa Bay. In 1889, Mullet Key, to the north, and Egmont Key, to the south, had fortresses built to guard against invasions that never came, remnants of both forts remain today in the parks that were created in the late 1800s. Robert E Lee made the recommendation, in 1849, that both Mullet and Egmont keys become fortified. Fort DeSoto, on Mullet Key, was built in 1889…