The "Path of History" is a string of historical sites in Portsmouth. Public parks serve as bookends to the Path, which links two of the nation's oldest Navy facilities � the Naval Medical Center and the Naval Shipyard. A 1-acre park at the south end is adjacent to the Naval Shipyard. More than a dozen signs featuring key milestones in the Naval Shipyard's 240-year history are displayed, such as two 75,000-pound propellers from naval supply ships and a refurbished sail from a former submarine and Navy guns that were once used on vessels built there. The north end is the 3-acre Fort Nelson Park at the entrance to the nation's first Navy hospital. It is home to placards describing local history and a scattering of Navy artifacts, like warship guns and buoys. Named "Best New Facility" by the Va. Recreation & Park Society.