The National Register of Historic Places contains more than 85,000 sites, but only some 2,500 of them have been listed as National Historic Landmarks. New England is home to hundreds of these particularly significant structures, objects and places.
Above:
The Great Seal of the Commonwealth of Massachusetts
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| MASSACHUSETTS Tremont Street Subway, Boston The oldest subway tunnel in North America entered service in 1897, and is still in use today.  |
