Jmoore,
There are two historic ships moored at Penn's Landing in Philadelphia: the cruiser Olympia and the submarine Becuna. And directly across the Delaware River from Philadelphia in Camden NJ is the battleship New Jersey.
The Olympia was Commodore (later Admiral) Dewey's ship and she participated in defeating the Spanish fleet at the battle of Manila Bay and went on to serve in WWI until decommissioned in 1922; the Becuna served during WWII and sunk several Japaneseicon merchant ships and during the 50's and 60's was refitted to track Sovieticon submarines; and the New Jersey with 19 battle stars was all over the Pacific campaign, Vietnam, and Lebanon before being decommissioned in 1991.