Several of the sites within the park are neither owned nor operated by the National Park Service, and operate through cooperative agreements established upon the park's creation. The park service also operates visitor centers in downtown Boston and at the Charlestown Navy Yard, as well as the Bunker Hill Museum, not far from the Bunker Hill Monument. All eight properties are National Historic Landmarks.
The Bunker Hill Monument, located at the top of Breed's Hill in the Charlestown neighborhood of Boston, is a granite obelisk that was constructed in the mid 19th century to commemorate the Battle of Bunker Hill, fought June 17, 1775. The property is owned and administered by the National Park Service. The park service also operates the nearby Bunker Hill Museum.
The Charlestown Navy Yard is located on the southern edge of Charlestown on the banks of the Charles River. Used during the American Revolutionary War as a shipyard, it continued to serve as a base of the United States Navy until 1975, when the Navy turned the property over to the National Park Service. The Yard is home to the USS Constitution (the oldest floating commissioned naval vessel in the World), and the USS Cassin Young, a destroyer from the Second World War that is now operated as a museum ship.