All - Architectural style - Neoclassical architecture
| Lawnside School |
| Lawrence County Courthouse |
| Lawton High School |
| Lawton, John, House |
| Leach Public Library |
| Leavenworth County Courthouse |
| Leavitt-Hovey House |
| Ledbetter, James Dexter, House |
| Lee County Courthouse |
| Lee County Courthouse |
| Lee County Courthouse |
| Lee County Courthouse |
| Lee County Courthouse |
| Lee County Courthouse |
| Lee, Gen. William C., House |
| Lee, Higginson & Company Bank Building |
| Lee, Mattie V., Home |
| Lee, Robert E., Hotel |
| Leffland, Jules, House |
| Leis Block |
| Lemhi County Courthouse |
| Lenoir High School |
| Lentz, John A., House |
| Leominster High School |
| Leonard-Akin House |
| Leonard, J.T and Anna, House |
| LeRay Mansion |
| Leroy Theatre |
| Levi-Welder House |
| Levy House |
| Lewis House |
| Lewis, John W., House |
| Lewis-Rothchild Building |
| Lewiston Trust and Safe Deposit Company |
| Lexington School |
| Lexington, The |
| Liberty County Courthouse |
| Liberty Theatre |
| Library |
| Liederkranz |
| Linaweaver, Dr. Albert, House |
| Lincoln Branch Peoria Public Library |
| Lincoln Building |
| Lincoln Building |
| Lincoln Carnegie Library |
| Lincoln County Courthouse |
| Lincoln County Courthouse |
| Lincoln County Courthouse |
| Lincoln County Courthouse |
| Lincoln Heights Branch |
| Lincoln High School |
| Lincoln National Bank |
| Lincoln Park Post Office |
| Lincoln Park School |
| Lincoln Park United Methodist Church |
| Lincoln Public Library |
| Lincoln Public Library |
| Lincoln School |
| Lincoln School |
| Lincoln School |
| Lincoln School |
| Lincoln Theatre |
| Lindenwood Hall |
| Link-Lee House |
| Linwood Mausoleum |
| Lipscomb County Courthouse |
| Litchfield Elks Lodge No. 654 |
| Little, Arthur D., Inc., Building |
| Little, J.E., House |
| Little Kanawha Valley Bank |
| Little River High School |
| Little Rock US Post Office and Courthouse |
| Little, W. J., House |
| Livermore Carnegie Library and Park |
| Locke School |
| Lockyear College |
| Loew's State Theater |
| Logan County Courthouse |
| Logan County Courthouse |
| Logia Masonica Hijos de la Luz |
| Logue House |
| Lollin Block |
| Lompoc Public Library |
| Lone Beech |
| Long County Courthouse |
| Longfellow School |
| Long Street Church |
| Long, Willian H., House |
| Lonoke County Courthouse |
| Louderman Building |
| Louisa Building |
| Louisa County Courthouse |
| Louisa United Methodist Church |
| Louisiana State Exhibit Building |
| Louisville Water Company Pumping Station |
| Lounsbury, Phineas Chapman, House |
| Loup City Township Carnegie Library |
| Love County Courthouse |
| Lovejoy, Carrie, House |
| Lowe and Campbell Sporting Goods Building |
Data from United States Park Service and Wikidata
