Explore a restored submarine that did six tours of WWII duty and survived to tell the tale. The riveting audio tour will have you holding your breath as you hear submariners' stories of sudden attacks and tense moments in underwater stealth mode. All those shiny brass knobs and mysterious hydraulic valves make modern technology seem boring, but tight quarters below decks definitely make surfacing afterward a relief – mind your head and caution, claustrophobes.