The Charlestown Navy Yard is the last stop on the Freedom Trail. It is the home of the oldest US Naval Ship the USS Constitution. There are several things here you can visit. First stop at the Park Service Visitors Center which has exhibits on the history of the Navy Yard and the Constitution. You then walk out from there to go and visit the Constitution. After visiting the ship, you can walk across the way to visit the USS Constitution Museum which deals with the building, the storied career and how the Constitution was saved from being decommissioned and demolished. You can also walk further up and visit the USS Cassin Young a WWII Destroyer that you can walk around and check out.

The museum should be the first stop in order to see the history of the Charlestown Navy Yard and see how they built various items needed on ships throughout the years. Starts in the Colonial days and continues past WW2. Then you can wander a few of the docks to see leftover equipment.

The Charlestown Navy Yard is a great location for viewing historic ships, buildings & naval technology. In addition to the USS Constitution, there's a WW2 destroyer (USS Cassim Young) that's open in the summer. The former dry dock shows off the technology used to repair ships (such as the Constitution). enjoy walking around after viewing there famous ships.

This is one of the place tour busses drop off people as well as where the Freedom Trail will lead you. This area is ran by the park service. It is a great place to see the USS Constitution Museum, the USS Constitution, and the USS Cassin Young. All of these are free. If you have children they may enjoy it. Climbing in some instances are involved. It is a good place to spend a couple of hours and get a little bit of history.