In 1864, the Confederacy's H. L. Hunley torpedoed the Union warship USS Housatonic, becoming the world's first successful submarine. But moments after the attack, it disappeared mysteriously into the depths of the sea. Lost for more than a century, it was found in 1995 off the coast of Sullivan's Island and raised in 2000. It is now being preserved and excavated in a 90,000-gallon tank, which you can view along with artifacts excavated from inside, facial
reconstructions of the crew, and the National Geographic documentary Raising the Hunley.