Owned by state government

Gingras House and Trading Post (Pembina County, North Dakota)
Gipsy Fire Tower (Bollinger County, Missouri)
Girton Hall (Alameda County, California)
Gladstone Station (Somerset County, New Jersey)
Glasgow OMS #9 (Barren County, Kentucky)
Glebe House (Dutchess County, New York)
Glenbrook, The (Carson City, Nevada)
A narrow gauge 2-6-0 steam locomotive
Glendower (Warren County, Ohio)
Glens Falls Feeder Canal (Unspecified county, New York)
Gloversville Armory (Fulton County, New York)
Gnadenhutten Massacre Site (Tuscarawas County, Ohio)
Goddard Hall (Dona Ana County, New Mexico)
Goethe House (Sacramento County, California)
Goldsborough Creek Bridge (Mason County, Washington)
Rainbow arch bridge over Goldsborough Creek on WA 3 in Shelton
Goll Homestead (Fulton County, Ohio)
Gooding College Campus (Gooding County, Idaho)
Goodnow House (Riley County, Kansas)
Goodson Memorial School (Union County, New Mexico)
Goose Creek Stone Bridge (Loudoun County, Virginia)
Gordon Hall (Washtenaw County, Michigan)
Gordon Wilson Hall (Warren County, Kentucky)
Goshen Land Company Bridge (Rockbridge County, Virginia)
Two-span Pratt through truss bridge over Calfpasture River on Route 746 in Goshen
Gov. Wilson Lumpkin House (Clarke County, Georgia)
Governor's House (Kent County, Delaware)
Governor's Mansion (Laramie County, Wyoming)
Governor's Mansion (Richmond, Virginia)
Governor's Mansion (Travis County, Texas)
Governor's Mansion (Montgomery County, Alabama)
Governor's Mansion (Carson City, Nevada)
Graceville Historical Marker (Big Stone County, Minnesota)
Grady Gammage Memorial Auditorium (Maricopa County, Arizona)
Graeme Park (Montgomery County, Pennsylvania)
Grafton State School (Walsh County, North Dakota)
Graham Cave (Montgomery County, Missouri)
Graham Gymnasium (Grant County, New Mexico)
Granada Bridge (Prowers County, Colorado)
Grand Coulee Bridge (Okanogan County, Washington)
Through truss bridge over Columbia River on WA 155 in Coulee Dam
Grand Village of the Natchez Indians (Adams County, Mississippi)
Grande Ronde River Bridge (Asotin County, Washington)
Granger Station (Sweetwater County, Wyoming)
Granite Keystone Bridge (Essex County, Massachusetts)
Grant Cottage (Saratoga County, New York)
Grant Foreman House (Muskogee County, Oklahoma)
Grassemount (Chittenden County, Vermont)
Grave Creek Mound (Marshall County, West Virginia)
Great Northern Railway Company Bridge (Cass County, Minnesota)
Great Northern Railway Underpass (Mountrail County, North Dakota)
Great Western Schoolhouse (Belmont County, Ohio)
Greek Amphitheatre (Columbia County, Arkansas)
Greeley Union Pacific Railroad Depot (Weld County, Colorado)
Green Bridge (Dona Ana County, New Mexico)
Green Hall, University of Kansas (Douglas County, Kansas)
Green Hall is now known as Lippincott Hall.
Green Island Light (Ottawa County, Ohio)
Green McCurtain House (Haskell County, Oklahoma)
Green--Reading House (Mercer County, New Jersey)
Greenland Segment Old US 71 (Washington County, Arkansas)
Greenport Railroad Station (Suffolk County, New York)
Greensboro Depot (Orleans County, Vermont)
Grelen (Orange County, Virginia)
Griggsville Landing Lime Kiln (Pike County, Illinois)
Grist Mill Bridge (York County, Maine)
Guerneville Bridge (Sonoma County, California)
Gull Point State Park, Area A (Dickinson County, Iowa)
Gull Point State Park, Area B (Dickinson County, Iowa)
Gunlogson Farmstead Historic Site (Pembina County, North Dakota)
Gunnison River Bridge I (Gunnison County, Colorado)
Gunnison River Bridge II (Gunnison County, Colorado)
Gunston Hall (Fairfax County, Virginia)
Guthrie Armory (Logan County, Oklahoma)
Guy and Margaret Fleming House (San Diego County, California)
Guy Park (Montgomery County, New York)
Gwin Dudley Home Site (Franklin County, Virginia)
H. L. Mencken House (Baltimore, Maryland)
Hack and Simon Office Building (Knox County, Indiana)
Restored office serving the Knox County Development Corporation since 2008
Hackett Creek Bridge (Sebastian County, Arkansas)
Stringer bridge with stone piers over Hackett Creek on AR 45 in Hackett
Hadley Mountain Fire Observation Station (Saratoga County, New York)
Hadrosaurus Foulkii Leidy Site (Camden County, New Jersey)
Hagerstown Armory (Washington County, Maryland)
Halbrook Hotel (Dickson County, Tennessee)
Hale Halawai O Holualoa (Hawaii County, Hawaii)
Hale Monument (Tolland County, Connecticut)
Hale Pa'i (Maui County, Hawaii)
Hale-Byrnes House (New Castle County, Delaware)
Halekii-Pihana Heiau (Maui County, Hawaii)
HALF MOON (shipwreck) (Miami-Dade County, Florida)
Halifax Historic District (Halifax County, North Carolina)
Hall's Bridge (Chester County, Pennsylvania)
Halverson Log Cabin (Walworth County, Wisconsin)
Hamburg Armory (Berks County, Pennsylvania)
Hammer Creek Bridge (Lancaster County, Pennsylvania)
Hammond Pond Parkway (Norfolk County, Massachusetts)
Hampton Plantation (Charleston County, South Carolina)
Hampton-Preston House (Richland County, South Carolina)
Hanalei Pier (Kauai County, Hawaii)
Hancock House (Salem County, New Jersey)
Hancock--Greenfield Bridge (Hillsborough County, New Hampshire)
Covered bridge over Contoocook River on Forrest Road in Hancock
Hanging Rock State Park Bathhouse (Stokes County, North Carolina)
Hanover House (Pickens County, South Carolina)
Historic home on the campus of Clemson University
Hare's Hill Road Bridge (Chester County, Pennsylvania)
Wrought-iron arch bridge over French Creek on Hares Hill Road
Harmon School (Churchill County, Nevada)
Harp Creek Bridge (Newton County, Arkansas)
Concrete arch over Harp Creek on AR 7 south of Harrison
Harper House (Johnston County, North Carolina)
Harriet Beecher Stowe House (Hamilton County, Ohio)
Harris-Pearson-Walker House (Richmond County, Georgia)
Harrisburg 19th Street Armory (Dauphin County, Pennsylvania)
Harrison Avenue Bridge (Lackawanna County, Pennsylvania)
Open-spandrel arch bridge over Roaring River on PA 6011 (Harrison Avenue) in Scranton
Harry Bartlett Stewart Property (Stark County, Ohio)
Harry Truman Birthplace Memorial (Barton County, Missouri)
Harwood Foundation (Taos County, New Mexico)
Haslett Warehouse (San Francisco County, California)
Hauser Farm (Surry County, North Carolina)
Haven B. Howe House (Pulaski County, Virginia)
Hawkins Hall (Clinton County, New York)
Hawkins-Hartness House (Wake County, North Carolina)
Hawley's Ferry House (Addison County, Vermont)
Haystack Mountain Tower (Litchfield County, Connecticut)
Healdton Armory (Carter County, Oklahoma)
Health Buildings-Gymnasium (Warren County, Kentucky)
Health Education Building (Coles County, Illinois)
Healy House (Lake County, Colorado)
Hearst Greek Theatre (Alameda County, California)
Hearst Gymnasium for Women (Alameda County, California)
Hearst Memorial Mining Building (Alameda County, California)
Hearst San Simeon Estate (San Luis Obispo County, California)
Heating Plant (Warren County, Kentucky)
Heating Plant (Grant County, New Mexico)
Heim Mound (Dane County, Wisconsin)
Fox Shape Effigy Mound, Owned and protected by Wisconsin Archeological Society
Heirline Covered Bridge (Bedford County, Pennsylvania)
Henderson Armory (Henderson County, Kentucky)
Henderson Hall (Putnam County, Tennessee)
Hennepin Canal Historic District (Bureau County, Illinois)
Henry Clay Furnace (Monongalia County, West Virginia)
Henry Clay Law Office (Fayette County, Kentucky)
Henry Mall Historic District (Dane County, Wisconsin)
A long block, grass mall lined with buildings from the School of Agriculture on the UW Campus
Henry Perrine Baldwin High School (Maui County, Hawaii)
Henry Whitfield House (New Haven County, Connecticut)
Hereford Lighthouse (Cape May County, New Jersey)
Herkimer House (Herkimer County, New York)
Herman Davis Memorial (Mississippi County, Arkansas)
Herman Luce Cabin (Lake County, South Dakota)
Herman Strasburg House (Wayne County, Michigan)
Herns Mill Covered Bridge (Greenbrier County, West Virginia)
Herrara Shipwreck Site (Monroe County, Florida)
Hessian Barracks (Frederick County, Maryland)
HETTY TAYLOR (shipwreck) (Sheboygan County, Wisconsin)
Heublein Tower (Hartford County, Connecticut)
Steel and concrete tower atop Talcott Mountain.
Hialeah Seaboard Air Line Railway Station (Miami-Dade County, Florida)
Hiawatha National Guard Armory (Brown County, Kansas)
High Breeze Farm (Sussex County, New Jersey)
High Bridge (Cumberland County, Virginia)
High Level Bridge (Marion County, West Virginia)
Concrete arch bridge over Monongahela River on Jefferson Street (CR 19/73) in Fairmont
High Point Park Historic District (Sussex County, New Jersey)
Highfields (Unspecified county, New Jersey)
Highlands, The (Montgomery County, Pennsylvania)
Highwater Rock (Linn County, Iowa)
Highway 11 Bridge over Chunky River (Clarke County, Mississippi)
Highway 152 Tree Row (Santa Clara County, California)
Hilgard Hall (Alameda County, California)
Hill Hall at Savannah State College (Chatham County, Georgia)
Hillsdale Station (Bergen County, New Jersey)
Hinckley State Line Marker (Pine County, Minnesota)
Hinds County Armory (Hinds County, Mississippi)
Hippodrome Theatre (Baltimore, Maryland)
Hiram Smith Hall and Annex (Dane County, Wisconsin)
Historic District H (Cooper County, Missouri)
Hodge Hall (Orangeburg County, South Carolina)
Hodgin Hall (Bernalillo County, New Mexico)
Hofwyl-Broadfield Plantation (Glynn County, Georgia)
Hogback Bridge (Clearfield County, Pennsylvania)
Hokes Mill Covered Bridge (Greenbrier County, West Virginia)
Hokukano-Ualapue Complex (Maui County, Hawaii)
Holbrook Bridge (Navajo County, Arizona)
Holbrook Bridge (Navajo County, Arizona)
Holdenville Armory (Hughes County, Oklahoma)
Hollenberg Pony Express Station (Washington County, Kansas)
Holly Grove Mansion (Kanawha County, West Virginia)
Holme Avenue Bridge (Philadelphia County, Pennsylvania)
Holmes County State Park (Holmes County, Mississippi)
Holy Child Church (Bernalillo County, New Mexico)
Home Economics Building (Warren County, Kentucky)
Demolished. Replaced with a parking lot
Home Economics Building (Los Angeles County, California)
Home Economics/Commons Building (Cache County, Utah)
Home for Aged Masons (Davidson County, Tennessee)
Hominy Armory (Osage County, Oklahoma)
Hominy Ridge Shelter House (Wabash County, Indiana)
Hoosick Falls Armory (Rensselaer County, New York)
Hope Furnace (Vinton County, Ohio)
Hope Lodge (Montgomery County, Pennsylvania)
Hopewell Station (Mercer County, New Jersey)
Hopson--Swan Estate (Rockland County, New York)
Hoquiam River Bridge (Grays Harbor County, Washington)
Bascule bridge over Hoquiam River on US 101 in Hoquiam
Horace Hills Irvine House (Ramsey County, Minnesota)
Hornell Armory (Steuben County, New York)
Horse Barn (Canyon County, Idaho)
Horse Creek Bridge (Ottawa County, Oklahoma)
Steel stringer bridge over Horse Creek on US 60 in Afton