The National Park Service is seeking a contractor for the rehabilitation of four buildings at Boston National Historical Park in Charlestown, Massachusetts. The estimated budget for this requirement is between $1,000,000 and $5,000,000. The work includes providing all labor, materials, and supervision as detailed in the provided specifications and drawings. A site visit will be held at the park, in front of the USS Constitution Museum in the Charlestown Navy Yard. The project includes a base requirement and three optional scopes of work for additional buildings.