Visit WWII battleships and submarines
The USS Alabama Battleship Memorial Park is a must for lovers of naval history, WWII history, and military history in general. The park in Mobile, Alabama has lots to see (more on that in a moment) but the crowning gem is the USS Alabama, a WWII-era battleship that was in service protecting transit routes through the seas of Northern Europe as well as battling the Japanese for control of the Pacific theater. In fact, the USS Alabama was instrumental in the taking of the Marshall Islands and Nauru Island.
It's actually pretty neat to walk around the deck of a World War II battleship and you can also check out the USS Drum, a WWII-era submarine that's also house in the park. The coolest parts are sitting in the gun turrets of the USS Alabama and exploring the Drum to see how the sailors actually lived. It must have been pretty tough!