The Inner Harbor in Baltimore is a great spot to see for a little taste of ships throughout American history.
The USS Constellation (1855), lightship Chesapeake (1930), US Coast Guard Cutter Taney (1936) and the USS Torsk submarine (1944) can all be seen for $18, and it gives you a nice taste of how our sailors survived on the seas.
From living quarters (smaller in the sub than the Constellation) to the eating areas (same, as everything tends to be in a submarine), and how they load their ammo and keep the waters safe, there is plenty to learn for everyone (plus it’s ships!!).
Adults will be fascinated with the history and children will enjoy ringing the bells, spinning the wheels and listening to the radios of mock communication.
Also in the Inner Harbor and within walking distance is a 9/11 Memorial (located between the ships) dedicated to the people of Baltimore who died on that day.
And not far away are Camden Yards, home of the Baltimore Orioles baseball team, and M&T Bank Stadium, home of the football Ravens. Camden Yards are among the nicest areas amongst baseball stadiums and I would like to go back for a game at some point.