Built during 1860s

Episcopal Burying Ground and Chapel (Fayette County, Kentucky)
Episcopal Church of Our Saviour (El Dorado County, California)
Episcopal Church of the Transfiguration (Scott County, Minnesota)
Eric and Martha Linberg Farm (Bosque County, Texas)
Erie Land Lighthouse (Erie County, Pennsylvania)
Erie Railroad Station (Susquehanna County, Pennsylvania)
Ernst Schowengerdt House (Warren County, Missouri)
Ervin Lewis House (Hinds County, Mississippi)
Essex County Home and Farm (Essex County, New York)
Estill-Fite House (Franklin County, Tennessee)
Etna House (Portage County, Ohio)
Eubanks-Tytus House (Highland County, Ohio)
Eugene Dorflinger Estate (Wayne County, Pennsylvania)
Eureka Historic District (Eureka County, Nevada)
An Oasis on the Loneliest Road in America
Eustatia (Dutchess County, New York)
Evangelical Free Church (Worcester County, Massachusetts)
Evans House No. 2 (Montgomery County, Virginia)
Evergreen on the Falls (Baltimore, Maryland)
Everhardt Ranch (Jefferson County, Colorado)
Excelsior (Morehouse Parish, Louisiana)
Exchange Hall (Middlesex County, Massachusetts)
Exchange Hotel (Orange County, Virginia)
Exchange Square Historic District (Green County, Wisconsin)
Expedition Island (Sweetwater County, Wyoming)
Ezra Abbott House (Steele County, Minnesota)
F. L. Wandell Estate and Ward Factory Site (Bergen County, New Jersey)
F.R. Merk Block (Madison County, Montana)
Faber Double-Crib Barn (Jackson County, West Virginia)
Fagley House (Chester County, Pennsylvania)
Fair Haven Flour Mill (Stearns County, Minnesota)
Fair Lawn (Putnam County, New York)
Fair Meadows (Harford County, Maryland)
Fairchild Mansion (Otsego County, New York)
Fairfield Historic District (Adams County, Pennsylvania)
Fairview (Mercer County, Kentucky)
Fairview (Amherst County, Virginia)
Fairview Cemetery, Confederate Section (Crawford County, Arkansas)
Falley Home (Tippecanoe County, Indiana)
Faraway Farm (Berkeley County, West Virginia)
Farmer's Hall (Burlington County, New Jersey)
Farmington River Railroad Bridge (Hartford County, Connecticut)
Farmville Historic District (Pitt County, North Carolina)
Farquhar, Samuel, House (Middlesex County, Massachusetts)
Farrier, Amasa, Boardinghouse (Middlesex County, Massachusetts)
Farrier, Amasa, House (Middlesex County, Massachusetts)
Fayette (Delta County, Michigan)
Fayetteville National Cemetery (Washington County, Arkansas)
Federal Fortifications Along Bear Creek (Warren County, Mississippi)
Federal Siege Trench (Alcorn County, Mississippi)
Felipe Chaves House (Valencia County, New Mexico)
Felix Grimes House (Daviess County, Kentucky)
Felix Labauve House (De Soto County, Mississippi)
Felton Railroad Station (Kent County, Delaware)
Fenton, Gov. Reuben, Mansion (Chautauqua County, New York)
Feodar Protar Cabin (Charlevoix County, Michigan)
Ferdinand C. Hartwig House (Dodge County, Wisconsin)
Fern Cottage Historic District (Humboldt County, California)
Fernando G. Taylor House (Ripley County, Indiana)
Ferris-Hermsmeyer-Fenton (Madison County, Montana)
Fessler--Secongost House (Cooper County, Missouri)
Fetter's Mill (Montgomery County, Pennsylvania)
Fields Place-Vickery House (Lumpkin County, Georgia)
Fillmore County Jail and Carriage House (Fillmore County, Minnesota)
Finney House (Madison County, Montana)
Fire Station No. 4 (Bristol County, Massachusetts)
First (Park) Congregational Church (Kent County, Michigan)
First Baptist Church (Chittenden County, Vermont)
First Baptist Church (Shelby County, Tennessee)
First Baptist Church (Cumberland County, Maine)
First Baptist Church (Blue Earth County, Minnesota)
First Baptist Church (Essex County, Massachusetts)
First Baptist Church of Interlaken (Seneca County, New York)
First Baptist Church of Northborough (Worcester County, Massachusetts)
First Baptist Church of West Union (Fayette County, Iowa)
First Christian Church (Marion County, Iowa)
First Christian Church (Wabash County, Indiana)
First Christian Church (Clark County, Indiana)
First Christian Church built in 1860
First Civil War Monument (Grant County, Wisconsin)
A Memorial to those from Grant County who died in the Civil War.
First Congregational Church (Eaton County, Michigan)
First Congregational Church (Des Moines County, Iowa)
First Congregational Church (Clayton County, Iowa)
First Congregational Church (Fond du Lac County, Wisconsin)
Romanesque Revival church designed by Edward Townsend Mix
First Congregational Church (Grant County, Wisconsin)
Romanesque church, built in 1869, still serving its congregation
First Congregational Church in Woburn (Middlesex County, Massachusetts)
First Congregational Church of LaMoille (Bureau County, Illinois)
First Congregational Church of Otto (Cattaraugus County, New York)
First Congregational Church of Pescadero (San Mateo County, California)
First Congregational Church of Zumbrota (Goodhue County, Minnesota)
First Evangelical Lutheran Church (Galveston County, Texas)
First Hotze House (Pulaski County, Arkansas)
First Lutheran Church (Mitchell County, Iowa)
First Lutheran Church (Dane County, Wisconsin)
First Methodist Church (Green County, Wisconsin)
Mix designed Late-Gothic Revival church repurposed as a theater and arts center for the community.
First Methodist Church (Harrison County, Texas)
First Methodist Church of Burlington (Chittenden County, Vermont)
First National Bank (Muscogee County, Georgia)
First National Bank of Morrisville (Madison County, New York)
First National Bank of Seaford (Sussex County, Delaware)
First Parish Congregational Church (Cumberland County, Maine)
First Presbyterian Church (Muscogee County, Georgia)
First Presbyterian Church (Clinton County, New York)
First Presbyterian Church (Fayette County, Illinois)
First Presbyterian Church (Talladega County, Alabama)
First Presbyterian Church (Branch County, Michigan)
First Presbyterian Church of Avon (Livingston County, New York)
First Reformed Dutch Church of Bergen Neck (Hudson County, New Jersey)
First Unitarian Church (Stoneham) (Middlesex County, Massachusetts)
First United Methodist Church (Herkimer County, New York)
First United Methodist Church (Boyd County, Kentucky)
First United Methodist Church (Fulton County, New York)
First United Presbyterian Church (Rensselaer County, New York)
Gothic Revival church built in 1864
Fisher West Farm (Allen County, Indiana)
Fitzpatrick House (Will County, Illinois)
Five Forks Battlefield (Dinwiddie County, Virginia)
Fix Farmstead (Wabaunsee County, Kansas)
Flentje, Ernst, House (Middlesex County, Massachusetts)
Fletcher Coffman House (Franklin County, Ohio)
Flocktown Schoolhouse (Morris County, New Jersey)
Florence Mill (Tolland County, Connecticut)
Florence Townsite Historic District (Pinal County, Arizona)
Floretta (Manitowoc County, Wisconsin)
Iron Ore Schooner, Foundered off Newton in 1885
Flushing Town Hall (Queens County, New York)
Foley Hall (Vigo County, Indiana)
Ford House (Monongalia County, West Virginia)
Ford's Theatre National Historic Site (Washington, District of Columbia)
Forest Downtown Historic District (Scott County, Mississippi)
Forest Hill Cottage (Worcester County, Massachusetts)
Forest View (Howard County, Maryland)
Forestville Baptist Church (Wake County, North Carolina)
Forry's Mill Covered Bridge (Lancaster County, Pennsylvania)
Covered bridge over Big Chickies Creek on Bridge Valley Road
Fort Abercrombie (Richland County, North Dakota)
Fort Bayard Historic District (Grant County, New Mexico)
Fort Benton (Wayne County, Missouri)
Fort Boise (Ada County, Idaho)
Fort Boreman (Wood County, West Virginia)
Fort Bowie National Historic Site (Cochise County, Arizona)
Fort Branch Site (Martin County, North Carolina)
Fort Buford State Historic Site (Williams County, North Dakota)
Fort Buhlow (Rapides Parish, Louisiana)
Fort C. F. Smith Historic District (Big Horn County, Montana)
Fort C. F. Smith Historic District (Arlington County, Virginia)
Fort C.F. Smith (Warren County, Kentucky)
Fort Caspar (Natrona County, Wyoming)
Fort Churchill (Lyon County, Nevada)
Fort Clifton Archaeological Site (Colonial Heights, Virginia)
Fort Collier (Frederick County, Virginia)
Fort Concho Historic District (Tom Green County, Texas)
Fort Crafford (Newport News, Virginia)
Fort David A. Russell (Laramie County, Wyoming)
Fort Davidson (Iron County, Missouri)
Fort Davis (Muskogee County, Oklahoma)
Fort DeRussy (Avoyelles Parish, Louisiana)
Fort Deseret (Millard County, Utah)
Fort Dilts (Bowman County, North Dakota)
Fort Donelson National Battlefield (Stewart County, Tennessee)
Fort Douglas (Salt Lake County, Utah)
Fort Duffield (Hardin County, Kentucky)
Fort Ethan Allen (Arlington County, Virginia)
Fort Fetterman (Converse County, Wyoming)
Fort Fisher (New Hanover County, North Carolina)
Fort Granger (Williamson County, Tennessee)
Fort Griffin (Shackelford County, Texas)
Fort Halleck (Carbon County, Wyoming)
Fort Harker (Jackson County, Alabama)
A military fortification built by the Union Army during the American Civil War.
Fort Harker Guardhouse (Ellsworth County, Kansas)
Fort Harker Officers' Quarters (Ellsworth County, Kansas)
Fort Harrison National Cemetery (Henrico County, Virginia)
Fort Hayes (Franklin County, Ohio)
Former military base now serving as a career center and home to WCBE-FM.
Fort Hays (Ellis County, Kansas)
Fort Heiman Site (Calloway County, Kentucky)
Fort Hill Rural Historic District (Barnstable County, Massachusetts)
Fort Howell (Beaufort County, South Carolina)
Civil War Era Fort
Fort Huger (Isle of Wight County, Virginia)
Fort Industry Square (Lucas County, Ohio)
Fort Klamath Site (Klamath County, Oregon)
Fort Larned National Historic Site (Pawnee County, Kansas)
Fort Leavenworth National Cemetery (Leavenworth County, Kansas)
Fort Logan and Blockhouse (Meagher County, Montana)
Fort Lookout (Ouachita County, Arkansas)
Fort Lyon (Bent County, Colorado)
Fort Lytle (Warren County, Kentucky)
Fort McAllister (Bryan County, Georgia)
Fort McCulloch (Bryan County, Oklahoma)
Fort Mill Ridge Civil War Trenches (Hampshire County, West Virginia)
Considered the best preserved trenchworks from the Civil War
Fort Morgan (Baldwin County, Alabama)
Fort Negley (Davidson County, Tennessee)