Massachusetts

The 18

Adams National Historical Park

Appalachian National Scenic Trail

Blackstone River Valley National Historical Park

Boston African American National Historic Site

Boston Harbor Islands National Recreation Area

Boston National Historical Park

Cape Cod National Seashore

Frederick Law Olmsted National Historic Site

John Fitzgerald Kennedy National Historic Site

Longfellow House–Washington's Headquarters National Historic Site

Lowell National Historical Park

Minute Man National Historical Park

New Bedford Whaling National Historical Park

New England National Scenic Trail

Salem Maritime National Historic Site

Saugus Iron Works National Historic Site

Springfield Armory National Historic Site

Washington–Rochambeau Revolutionary Route National Historic Trail