Built during 1810s

"S" Bridge (Washington County, Pennsylvania)
Stone arch bridge over a branch of Buffalo Creek on the old alignment of the National Road
Aaron Kinney House (Scioto County, Ohio)
Abbott, Jacob, House (Franklin County, Maine)
Demolished 2001
Abe Souther House (Boone County, Kentucky)
Aberdeen (Prince George County, Virginia)
Abram Glenn House (Williamson County, Tennessee)
Achilles Eubank House (Clark County, Kentucky)
Achmester (New Castle County, Delaware)
Ackerman House (Bergen County, New Jersey)
Acton House (Preble County, Ohio)
Addison Baptist Church (Addison County, Vermont)
Advance Mills Historic District (Albemarle County, Virginia)
Aiken House (Rensselaer County, New York)
Alabama Iron Works (Franklin County, Alabama)
Albany Academy (Albany County, New York)
Alexander Bradford House (Scott County, Kentucky)
Alexander Campbell Mansion (Brooke County, West Virginia)
Alexander Davis Cabin (Franklin County, Ohio)
Alexander Hamilton House (Franklin County, Pennsylvania)
Alfred Street Baptist Church (Alexandria, Virginia)
Alfred Village Historic District (Allegany County, New York)
Alice (Iberia Parish, Louisiana)
Allegheny Furnace (Blair County, Pennsylvania)
Allen-Alexander House (Bourbon County, Kentucky)
Allenstown Meeting House (Merrimack County, New Hampshire)
Allenville Mill (Providence County, Rhode Island)
Alston-DeGraffenried House (Chatham County, North Carolina)
Amasa Day House (Middlesex County, Connecticut)
American Antiquarian Society (Worcester County, Massachusetts)
Ames Hill/Crescent Hill District (Hampden County, Massachusetts)
Amos Cooke House (Providence County, Rhode Island)
Anchorage, The (Talbot County, Maryland)
Andover Village Industrial District (Essex County, Massachusetts)
Andrew Thompson Farmstead (Orange County, New York)
Andrew Trumbo Log House (Franklin County, Kentucky)
Andrews Tavern (Spotsylvania County, Virginia)
Ann Cunningham Evans House (Lancaster County, Pennsylvania)
Annington (Montgomery County, Maryland)
Anthony House (Berkshire County, Massachusetts)
Antonia (West Baton Rouge Parish, Louisiana)
Appomattox Iron Works (Petersburg, Virginia)
Archibald McAllister House (Dauphin County, Pennsylvania)
Archibald Mewborn House (Hart County, Georgia)
Arlington (Adams County, Mississippi)
Arnold-Wooldridge House (Woodford County, Kentucky)
Arrow Rock (Saline County, Missouri)
Arsenal House (Oneida County, New York)
Art Association of Harrisburg (Dauphin County, Pennsylvania)
Arthur Walrath House (Jefferson County, New York)
Asa Payne House (Scott County, Kentucky)
Asahel Warner House (Livingston County, New York)
Ashfield Plain Historic District (Franklin County, Massachusetts)
Ashland (Fayette County, Kentucky)
Ashley Church (Charleston County, South Carolina)
Historic African-American church in Edisto Island, SC
Astoria Downtown Historic District (Clatsop County, Oregon)
Attoway R. Davis Home (Greene County, Alabama)
A historic house in Eutaw, Alabama.
Atwater-Stone House (Chautauqua County, New York)
Auburn (Adams County, Mississippi)
Auburn Mills Historic District (New Castle County, Delaware)
Aurora Buttles House (Franklin County, Ohio)
Aurora Steam Grist Mill (Cayuga County, New York)
Austintown Log House (Mahoning County, Ohio)
Avalon (Carroll County, Maryland)
Avon Congregational Church (Hartford County, Connecticut)
Ayres L. Bramble House (Hamilton County, Ohio)
Bald Head Island Lighthouse (Brunswick County, North Carolina)
Historic lighouse on Bald Head Island, NC
Barn Bluff (Goodhue County, Minnesota)
Barnet-Hoover Log House (Wayne County, Ohio)
Barnett Bobb House (York County, Pennsylvania)
Barton Heights Cemeteries (Richmond, Virginia)
Barton, Clara, Homestead (Worcester County, Massachusetts)
Batavia House (Geauga County, Ohio)
Bath Presbyterian Church and Cemetery (Richmond County, Georgia)
Battle Ground Historic District (Tippecanoe County, Indiana)
Battle Monument (Baltimore, Maryland)
Batts House and Outbuildings (Edgecombe County, North Carolina)
Beall-Dawson House (Montgomery County, Maryland)
Beallsville Historic District (Washington County, Pennsylvania)
Beaumont (Powhatan County, Virginia)
Beaver Dam (Wake County, North Carolina)
Beckwith Farmhouse (Madison County, New York)
Beechland (Jefferson County, Kentucky)
Belcher Family Homestead and Farm (Tioga County, New York)
Belcher--Holden Farm (Tioga County, New York)
Belle Grove (Fauquier County, Virginia)
Belle Isle (Richmond, Virginia)
Bellemonte (Nash County, North Carolina)
Bellman's Union Church (Berks County, Pennsylvania)
Bellona Arsenal (Chesterfield County, Virginia)
Ben Moran House (Mason County, Kentucky)
Benedict House (Rockingham County, New Hampshire)
Benjamin and Mary Young House (Lake County, Ohio)
Benjamin Bowen House (Herkimer County, New York)
Benjamin Chamberlain House (Fulton County, New York)
Benjamin Ferguson House (Clark County, Indiana)
Benjamin Helm House (Hardin County, Kentucky)
Benjamin Martin House (Barren County, Kentucky)
Benjamin Piatt Fowler House (Boone County, Kentucky)
Benjamin Watkins Leigh House (Richmond, Virginia)
Bethel Burial Ground (Philadelphia County, Pennsylvania)
Former African-American Cemetery, now in use as a playground/park
Bethel Methodist Church (Clermont County, Ohio)
Bethesda Baptist Church and Cemetery (Greene County, Georgia)
Biever House (Lebanon County, Pennsylvania)
Big Spring Church (Woodford County, Kentucky)
Bigelow Tavern Historic District (Worcester County, Massachusetts)
Bird Island Light (Plymouth County, Massachusetts)
Birdwood (Albemarle County, Virginia)
Black Horse Tavern (Adams County, Pennsylvania)
Black-Cole House (Moore County, North Carolina)
Blairstown Historic District (Warren County, New Jersey)
Blakeley (Baldwin County, Alabama)
A ghost town in Baldwin County, Alabama.
Blakeslee Log Cabin (Ashtabula County, Ohio)
Blantonia Plantation House (Jefferson County, Mississippi)
Blazo-Leavitt House (York County, Maine)
Blinn--Pulver Farmhouse (Columbia County, New York)
Bloomville Methodist Epicopal Church (Delaware County, New York)
Boise House (Mercer County, Kentucky)
Bon Aire (Nelson County, Virginia)
Booth Farm (Delaware County, Pennsylvania)
Bost-Burris House (Catawba County, North Carolina)
Boston Manufacturing Company (Middlesex County, Massachusetts)
Bourne Mansion (York County, Maine)
Bowditch, Nathaniel, House (Essex County, Massachusetts)
Bowman's Folly (Accomack County, Virginia)
Bowman-Pirkle House (Hall County, Georgia)
Bowman-Pirkle House (Gwinnett County, Georgia)
Boxwoods, The (Rockingham County, North Carolina)
Boyd's Windmill (Newport County, Rhode Island)
Boydville (Berkeley County, West Virginia)
Boynton Street Historic District (Washington County, Maine)
Brainerd Mission Cemetery (Hamilton County, Tennessee)
Bramanville Mill (Schoharie County, New York)
Branch Banking House (Wilkinson County, Mississippi)
Brandywine Manufacturers Sunday School (New Castle County, Delaware)
Bray-Paschal House (Chatham County, North Carolina)
Breck's Mill Area (New Castle County, Delaware)
Breckenridge Hatter's Shop (Maury County, Tennessee)
Briars (Adams County, Mississippi)
Brick House on the Pike (Howard County, Maryland)
Brick Inn (Trigg County, Kentucky)
Brick Mill Site (Blount County, Tennessee)
Brick School (Kennebec County, Maine)
Brickett Place (Oxford County, Maine)
Brickland (Lunenburg County, Virginia)
Bridal House (Sumner County, Tennessee)
Bristol County Courthouse (Bristol County, Rhode Island)
Broad Street Historic District (Oxford County, Maine)
Bronk--Silvester House (Greene County, New York)
Brookefield of the Berrys (Prince George's County, Maryland)
Brookland (Granville County, North Carolina)
Brooklyn Heights Historic District (Kings County, New York)
Brown House (Piscataquis County, Maine)
Brown's Ferry (Southampton County, Virginia)
Bruin's Slave Jail (Alexandria, Virginia)
Brummell's Inn (Davidson County, North Carolina)
Brush Creek Salems Church (Westmoreland County, Pennsylvania)
Buck-Mercer House (Pulaski County, Kentucky)
Building at 44 Central Avenue (Albany County, New York)
Burgess House (Piscataquis County, Maine)
Burleigh (Howard County, Maryland)
Burleigh House (St. Landry Parish, Louisiana)
Burlington County Prison (Burlington County, New Jersey)
Burt--Cheney Farm (Grafton County, New Hampshire)
Butler--Greenwood Plantation (West Feliciana Parish, Louisiana)
Butterfield House (Windham County, Vermont)
Buttles--Johnson House (Franklin County, Ohio)
Buxton Inn (Licking County, Ohio)
Buxton Powder House (York County, Maine)
Cabiness-Hunt House (Jones County, Georgia)
Cades Cove Historic District (Blount County, Tennessee)
Cades Cove is historic settlement in the Great Smokey Mountains
Cahaba (Dallas County, Alabama)
The first permanent state capital of Alabama from 1820 to 1825.
Caldron Linn (Unspecified county, Idaho)
Caledonia Farm (Rappahannock County, Virginia)
Callawassie Sugar Works (Beaufort County, South Carolina)
Canandaigua Historic District (Ontario County, New York)
Candace Allen House (Providence County, Rhode Island)
Cane Springs Primitive Baptist Church (Madison County, Kentucky)
Cannon's Ferry (Sussex County, Delaware)
Cannonball House (Talbot County, Maryland)
Cantrill House (Scott County, Kentucky)
Capt. Jacob Shoemaker House (Monroe County, Pennsylvania)
Capt. Robert V. Bush House (Clark County, Kentucky)
Carbon County Section of the Lehigh Canal (Carbon County, Pennsylvania)
Carleton, Robert, House (Piscataquis County, Maine)
Carlisle Historic District (Nicholas County, Kentucky)
Carpenter, George, House (Worcester County, Massachusetts)
Carroll Mansion (Baltimore, Maryland)
Carson House (McDowell County, North Carolina)
Carter, Capt. Charles, House (Sagadahoc County, Maine)
Carter-Worth House and Farm (Chester County, Pennsylvania)
Cartwright-Moss House (Davidson County, Tennessee)
Casselman's Bridge, National Road (Garrett County, Maryland)
Stone arch bridge over Casselman River on Old US 40, east of Grantsville
Castleton Medical College Building (Rutland County, Vermont)
Cate House (Hancock County, Maine)
Catlett House (Boyd County, Kentucky)
Cecil's Mill Historic District (St. Mary's County, Maryland)
Cedar Grove (New Kent County, Virginia)