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Acequia Madre (San Miguel County, New Mexico)
Altus Well Shed--Gazebo (Franklin County, Arkansas)
Amon Park Entrance Arch (Benton County, Washington)
Sandstone arch marking the entrance to Howard Amon Park erected in 2010
Anaconda Copper Mining Company Smoke Stack (Deer Lodge County, Montana)
Ankeny Square Colonnade (Multnomah County, Oregon)
Cast Iron colonnade at Ankeny Square
Arlington Reservoir (Middlesex County, Massachusetts)
Armour's Warehouse (LaSalle County, Illinois)
Athletic Club of Columbus (Franklin County, Ohio)
A private social and athletic club built in 1912
Aztec Bowl (San Diego County, California)
B Street Pier (Del Norte County, California)
900-foot-long wooden fishing pier built in 1989
Band Saw Monument (Mason County, Washington)
Bear Creek Fishweir #1 (Tishomingo County, Mississippi)
Bear Creek Fishweir #2 (Tishomingo County, Mississippi)
Bear Mountain Lookout Complex (Greenlee County, Arizona)
BERKSHIRE NO. 7 (Fairfield County, Connecticut)
Sank in 1974
Beverly Hills Civic Center (Los Angeles County, California)
Spanish Revival/Art Deco/Post Modern civic center built in 1990
Big Pump (Nodaway County, Missouri)
Blue Glacier Trail Shelters (Jefferson County, Washington)
Blue Streak (Crawford County, Pennsylvania)
Wooden roller coaster
Blue Sulphur Springs Pavilion (Greenbrier County, West Virginia)
Bluewater Lookout Complex (Otero County, New Mexico)
Bordelonville Floodgate (Avoyelles Parish, Louisiana)
Bourbon Iron Works (Bath County, Kentucky)
Bowser Gazebo (Middlesex County, Massachusetts)
Brevard College Stone Fence and Gate (Transylvania County, North Carolina)
Burlington Breakwater (Chittenden County, Vermont)
Butte-Cochran Charcoal Ovens (Pinal County, Arizona)
Cambridge Springs Trolley Station (Crawford County, Pennsylvania)
Trolley station
Canyon Grain Bin and Chutes (Whitman County, Washington)
Cape Romain Lighthouses (Charleston County, South Carolina)
Cardiff Coke Ovens (Garfield County, Colorado)
Carrisa Lookout Complex (Otero County, New Mexico)
Cathedral Valley Corral (Wayne County, Utah)
Catskill Charcoal Ovens (Colfax County, New Mexico)
CCC Company 749 Powder Magazine (Yell County, Arkansas)
Central Heating Plant (Washington, District of Columbia)
Central IND Substation (New York County, New York)
Chautauqua Pavilion (Fremont County, Iowa)
Chelsea Pedestrian Underpass (Rogers County, Oklahoma)
Cherry Springs Picnic Pavilion (Potter County, Pennsylvania)
Cherry Valley Coke Ovens (Columbiana County, Ohio)
China Ditch (Douglas County, Oregon)
Churchill Downs (Jefferson County, Kentucky)
City Pier A (New York County, New York)
City Square Park Bandstand (Allen County, Kansas)
Cogburn Dipping Vat (Montgomery County, Arkansas)
Coke Ovens (Pierce County, Washington)
Colorado Amphitheater (Jefferson County, Colorado)
Columbia Park Band Shell (Wood County, Wisconsin)
Brick and Wood Band Shell
Columbia River Gillnet Boat (Wahkiakum County, Washington)
Como Park Conservatory (Ramsey County, Minnesota)
Concourse Yard Entry Buildings (Bronx County, New York)
Concourse Yard Substation (Bronx County, New York)
Coney Island Yard Gatehouse (Kings County, New York)
Continental Clay Brick Plant (Berkeley County, West Virginia)
Cornell Pulpwood Stacker (Chippewa County, Wisconsin)
The last pulpwood stacker of its kind left in the world; Operational until 1971
Cotton Storage House (Haskell County, Oklahoma)
Coughlin Campanile (Brookings County, South Dakota)
Cowesett Pound (Kent County, Rhode Island)
Cumming Bandstand (Forsyth County, Georgia)
Davison Silo (Ellis County, Oklahoma)
Dawson Park Gazebo (Multnomah County, Oregon)
Copper domed gazebo built 1978
Deeds Carillon (Montgomery County, Ohio)
Deer Springs Lookout Complex (Navajo County, Arizona)
Delaware Breakwater and Lewes Harbor (Sussex County, Delaware)
Dell Rapids Amphitheater (Minnehaha County, South Dakota)
Dillon Memorial (Scott County, Iowa)
An upright, fluted column of concrete in the classic revival style.
Dipper Dredge No. 3 (Wayne County, New York)
Dodgeville Lime Kiln (Iowa County, Wisconsin)
Lime Kiln along Highway 191
Dooley Dipping Vat (Scott County, Arkansas)
Dragon Gate (San Francisco County, California)
DUCHESS (Sponge Hooking Boat) (Pinellas County, Florida)
Dutch Hollow Wine Cellars (Kanawha County, West Virginia)
Early Cotton Press (Dillon County, South Carolina)
EDWARD M. COTTER (fireboat) (Erie County, New York)
El Camino Del Diablo (Unspecified county, Arizona)
El Caso Lookout Complex (Catron County, New Mexico)
Elevated Metal Water Tank, Crosby (Crow Wing County, Minnesota)
Elevated Metal Water Tank, Cuyuna (Crow Wing County, Minnesota)
Elevated Metal Water Tank, Deerwood (Crow Wing County, Minnesota)
Elevated Metal Water Tank, Ironton (Crow Wing County, Minnesota)
Elevated Metal Water Tank, Trommald (Crow Wing County, Minnesota)
Elk Lake Shelter (Jefferson County, Washington)
Elwha Altaire Picnic Shelter Kitchen (Clallam County, Washington)
Elwha Picnic Shelter Kitchen (Clallam County, Washington)
Elwha Wilder Trailside Shelter (Jefferson County, Washington)
Erath Memorial Arch (Erath County, Texas)
Erin Limekilns (Houston County, Tennessee)
Eureka Lock and Lock Tender's House (Winnebago County, Wisconsin)
The last lock in operation on the Upper Fox River
F. C. LEWIS, JR (Somerset County, Maryland)
Fairfield Rice Mill Chimney (Georgetown County, South Carolina)
Fairport Marine Museum (Lake County, Ohio)
Fishdam Ford (Chester County, South Carolina)
Fishing Tug Katherine V (Alpena County, Michigan)
Flanigan Ditch (Washington County, Utah)
Franklin Sidewalk (Crawford County, Kansas)
Franklin Square (Philadelphia County, Pennsylvania)
Geldner Sawmill (Le Sueur County, Minnesota)
GEORGE N. CRETEKOS (Sponge Diving Boat) (Pinellas County, Florida)
Glen Park Municipal Swimming Pool (Pierce County, Wisconsin)
CWA, PWA and WPA project including a Craftsman style support building.
Glocester Town Pound (Providence County, Rhode Island)
Grassy Island Range Lights (Brown County, Wisconsin)
Pair of island-built range lights, moved to mainland in 1966 and restored in 1999
Great American Racing Derby (Erie County, Ohio)
Green Brae Brick Yard (Marin County, California)
Green Pleasure Pier (Los Angeles County, California)
Greenwood Cattle Pound (Oxford County, Maine)
Gregory Dipping Vat (Chicot County, Arkansas)
Griffith Observatory (Los Angeles County, California)
Astronomical observatory and planetarium opened in 1935
Grotto of the Redemption (Palo Alto County, Iowa)
Guinn Dipping Vat (Montgomery County, Arkansas)
Hanalei Pier (Kauai County, Hawaii)
Happy Hollow Trailside Shelter (Jefferson County, Washington)
Hartman Cider Press (Berks County, Pennsylvania)
Heliograph Lookout Complex (Graham County, Arizona)
Hill--Webb Grain Elevator (Collin County, Texas)
Hillcrest Park Archway (Curry County, New Mexico)
Horn Antenna (Monmouth County, New Jersey)
Hubbard Rice Dryer (Poinsett County, Arkansas)
Huilua Fishpond (Honolulu County, Hawaii)
HUME, MARY D. (Curry County, Oregon)
Hurlbut Memorial Gate (Wayne County, Michigan)
Hutchinson's, Gov. Thomas, Ha-ha (Norfolk County, Massachusetts)
Hygieostatic Bat Roost (Kendall County, Texas)
Ice House on Little Muddy Creek (Butler County, Kentucky)
Integratron (San Bernardino County, California)
Italian Community Bake Oven (Herkimer County, New York)
Italian Rock Ovens (Spokane County, Washington)
Jackson Square (Orleans Parish, Louisiana)
James Wild Horse Trap (Nye County, Nevada)
Jefferson Cattle Pound (Lincoln County, Maine)
John I. Thompson Grain Elevator and Coal Sheds (Centre County, Pennsylvania)
Trade hub located northeast of State College
Katahdin Iron Works (Piscataquis County, Maine)
King Airfield Hanger (Bristol County, Massachusetts)
Krape Park Carousel (Stephenson County, Illinois)
An Allan Herschell Model 268 Classic Metal Carousel in its original position.
Lake Mountain Lookout Complex (Apache County, Arizona)
48' Aermotor LX-24 lookout
Leap-the-Dips (Blair County, Pennsylvania)
Lighthouse Jetty (Del Norte County, California)
3,400 foot long, rock and concrete breakwater completed in 1957
LIGHTSHIP No. 101, PORTSMOUTH (Portsmouth, Virginia)
Lilac Park Beehive Fireplace (Hennepin County, Minnesota)
LILAC, United States Lighthouse Tender (New York County, New York)
Logan Square (Philadelphia County, Pennsylvania)
Los Angeles Memorial Coliseum (Los Angeles County, California)
Los Robles Gate (Leon County, Florida)
Lower Animas Ditch (San Juan County, New Mexico)
Lowry Ruin (Montezuma County, Colorado)
Mangas Mountain Lookout Complex (Catron County, New Mexico)
Manistee Harbor, South Breakwater (Manistee County, Michigan)
Manistee North Pier (Manistee County, Michigan)
Marathon County Fairgrounds (Marathon County, Wisconsin)
Martindale Corn Crib (White County, Arkansas)
Maumee Sidecut (Lucas County, Ohio)
Mays Coal Company tipple (Clarion County, Pennsylvania)
Former coal tipple along railroad right-of-way
Memphis Queen II Floating Vessel (Shelby County, Tennessee)
Mingus Lookout Complex (Yavapai County, Arizona)
60' Pacific Coast Steel tower with a 7'x7' metal cab
Mission Beach Roller Coaster (San Diego County, California)
Montana State Fairgrounds Racetrack (Lewis and Clark County, Montana)
Mookini Heiau (Hawaii County, Hawaii)
Mosquito Fleet Berth, Pier 19 (Galveston County, Texas)
Music Pavilion (Henry County, Illinois)
Myrtle Beach Sky Wheel (Horry County, South Carolina)
Ferris Wheel in Myrtle Beach, SC
N.K. SYMI (Sponge Diving Boat) (Pinellas County, Florida)
Nags Head Fishing Pier (Dare County, North Carolina)
Fishing Pier in Nags Head, NC
Nansen Ski Jump (Coos County, New Hampshire)
Nation Ford Fish Weir (York County, South Carolina)
Navigation Structures at White Lake Harbor (Muskegon County, Michigan)
Piers at White Lake
Nequasee (Macon County, North Carolina)
Neutral Buoyancy Space Simulator (Madison County, Alabama)
New Castle Ice Piers (New Castle County, Delaware)
New Market Colonnade (Multnomah County, Oregon)
Cast Iron facade salvaged from building demolished in 1956
New Smyrna Sugar Mill Ruins (Volusia County, Florida)
Nightingale Hall Rice Mill Chimney (Georgetown County, South Carolina)
Nix's Mate Daybeacon (Suffolk County, Massachusetts)
Oak Island Pier (Brunswick County, North Carolina)
Fishing Pier in Oak Island, NC
Obsidian Cliff Kiosk (Park County, Wyoming)
Ocean Crest Fishing Pier (Brunswick County, North Carolina)
Fishing Pier in Oak Island, NC
Oceanside Municipal Pier (San Diego County, California)
1,954' long wooden pier first built in 1888
Odd Fellows Temple (facade) (Walla Walla County, Washington)
Sandstone facade built in 1902 relocated in 1993
Old Natchez Trace (170-30) (Madison County, Mississippi)
Old Natchez Trace (212-3K 213-3K) (Attala County, Mississippi)
Old Natchez Trace (230-3H) (Choctaw County, Mississippi)
Old Natchez Trace (310-2A) (Lauderdale County, Alabama)
Oleson Park Music Pavilion (Webster County, Iowa)
Olympus Guard Station Shelter (Jefferson County, Washington)
One-Million-Liter Test Sphere (Frederick County, Maryland)
Ontonagon Harbor Piers Historic District (Ontonagon County, Michigan)
Orchard Shoal Light Station, Old (Richmond County, New York)